[gnome-common] compiler-flags: allow suppressing warnings

[Michael Catanzaro <mcatanzaro src gnome org>]

commit cdb06bca3101ef09a207deb290bd607ec128e04b
Author: Michael Catanzaro <mcatanzaro gnome org>
Date:   Sun Aug 17 18:00:17 2014 -0500

    compiler-flags: allow suppressing warnings
    
    Some projects want to see no warnings at all, for example, projects that
    are written in Vala. But GNOME_COMPILE_WARNINGS([no]) is a no-op that
    does nothing to turn off the default compiler warnings. Presumably if
    you ask for no compiler warnings, you want no compiler warnings, so
    suppress them in this case instead.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=734973

 macros2/gnome-compiler-flags.m4 |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/macros2/gnome-compiler-flags.m4 b/macros2/gnome-compiler-flags.m4
index cd1a0f5..2261949 100644
--- a/macros2/gnome-compiler-flags.m4
+++ b/macros2/gnome-compiler-flags.m4
@@ -58,7 +58,7 @@ AC_DEFUN([GNOME_COMPILE_WARNINGS],[
 
     case "$enable_compile_warnings" in
     no)
-        warning_flags=
+        warning_flags="-w"
         ;;
     minimum)
         warning_flags="-Wall"