[libgsf] Enable more format checking (when available)

[J.H.M. Dassen (Ray) <jdassen src gnome org>]

commit 02da5aa4e243e338233b09ee37c588104845e506
Author: J.H.M. Dassen (Ray) <jdassen debian org>
Date:   Sat Feb 19 10:24:44 2011 +0100

    Enable more format checking (when available)

 configure.in |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/configure.in b/configure.in
index b1c8526..627cdac 100644
--- a/configure.in
+++ b/configure.in
@@ -88,7 +88,7 @@ PKG_CHECK_MODULES(LIBGSF, $libgsf_reqs)
 ifdef([GNOME_COMPILE_WARNINGS],[GNOME_COMPILE_WARNINGS],)
 CFLAGS="$CFLAGS $WARN_CFLAGS -DG_DISABLE_DEPRECATED"
 if test "$GCC" = "yes"; then
-	for option in -Wno-system-headers -Wfloat-equal -Wpointer-arith -Wbad-function-cast -Wwrite-strings -Wsign-compare -Waggregate-return -Wstrict-prototypes -Wmissing-prototypes -Wmissing-declarations -Wformat -Wnested-externs -Winline -Wdeclaration-after-statement -Wundef -W -Wmissing-noreturn -Wmissing-format-attribute -Wno-pointer-sign \
+	for option in -Wno-system-headers -Wfloat-equal -Wpointer-arith -Wbad-function-cast -Wwrite-strings -Wsign-compare -Waggregate-return -Wstrict-prototypes -Wmissing-prototypes -Wmissing-declarations -Wformat=2 -Wnested-externs -Winline -Wdeclaration-after-statement -Wundef -W -Wmissing-noreturn -Wmissing-format-attribute -Wno-pointer-sign \
 	-Wbitwise -Wcast-to-as -Wdefault-bitfield-sign -Wdo-while -Wparen-string -Wptr-subtraction-blows -Wreturn-void -Wtypesign ; do
 		SAVE_CFLAGS="$CFLAGS"
 		CFLAGS="$CFLAGS $option"