Enable gcc flag -Wredundant-decls

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5931 c046a42c-6fe2-441c-8c8c-71466251a162

Makefile.target

diff --git a/Makefile.target b/Makefile.target
index bd5cafe..ac00c7a 100644
--- a/Makefile.target
+++ b/Makefile.target
@@ -73,7 +73,7 @@
 
 # We require -O2 to avoid the stack setup prologue in EXIT_TB
 OP_CFLAGS := -O2 -g -fno-strict-aliasing
-OP_CFLAGS += -Wall -Wundef -Wendif-labels -Wwrite-strings -Wmissing-prototypes -Wstrict-prototypes
+OP_CFLAGS += -Wall -Wundef -Wendif-labels -Wwrite-strings -Wmissing-prototypes -Wstrict-prototypes -Wredundant-decls
 
 # cc-option
 # Usage: OP_CFLAGS+=$(call cc-option, -falign-functions=0, -malign-functions=0)

configure

diff --git a/configure b/configure
index 72f5cd5..eb40f9d 100755
--- a/configure
+++ b/configure
@@ -381,7 +381,7 @@
 
 # default flags for all hosts
 CFLAGS="$CFLAGS -O2 -g -fno-strict-aliasing"
-CFLAGS="$CFLAGS -Wall -Wundef -Wendif-labels -Wwrite-strings -Wmissing-prototypes -Wstrict-prototypes"
+CFLAGS="$CFLAGS -Wall -Wundef -Wendif-labels -Wwrite-strings -Wmissing-prototypes -Wstrict-prototypes -Wredundant-decls"
 LDFLAGS="$LDFLAGS -g"
 if test "$werror" = "yes" ; then
 CFLAGS="$CFLAGS -Werror"