[gtkglarea] configure.ac: Compile with -Wall in automake

[Javier Jardón <jjardon src gnome org>]

commit 5d37a71809279c1bad7138c4231633fb1d9ecd37
Author: Javier Jardón <jjardon gnome org>
Date:   Thu Feb 27 02:56:24 2014 +0000

    configure.ac: Compile with -Wall in automake

 configure.ac |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index 8fe989a..a09e2bd 100644
--- a/configure.ac
+++ b/configure.ac
@@ -9,7 +9,7 @@ AC_CONFIG_AUX_DIR(.auto)
 AC_CONFIG_HEADER(config.h)
 AC_CONFIG_MACRO_DIR([m4])
 
-AM_INIT_AUTOMAKE([1.11 no-define no-dist-gzip dist-xz])
+AM_INIT_AUTOMAKE([1.11 -Wall no-define no-dist-gzip dist-xz])
 AM_MAINTAINER_MODE([enable])
 # Support silent build rules, requires at least automake 1.11. Disable
 # by either passing --disable-silent-rules to configure or passing V=1
@@ -175,7 +175,7 @@ AC_SUBST(GL_CFLAGS)
 AC_SUBST(GL_LIBS)
 
 CFLAGS="$CFLAGS $GTK_CFLAGS $GL_CFLAGS"
-CFLAGS="$CFLAGS -Wall -lm"
+CFLAGS="$CFLAGS -lm"
 
 AC_CONFIG_FILES([
   Makefile