[Xen-devel] [PATCH] xen/x86: Add -Wnested-externs to CFLAGS

[Tim Deegan <Tim.Deegan@xxxxxxxxxx>]

# HG changeset patch
# User Tim Deegan <Tim.Deegan@xxxxxxxxxx>
# Date 1306427536 -3600
# Node ID 73ba1d95d1ec59246e2f0a8e8a1136cd5f9d98c2
# Parent  69fe4b8a7c0961070a626cb473d19a0770db663a
xen/x86: Add -Wnested-externs to CFLAGS

This will catch any new extern declarations that happen actually
inside function bodies.  Unfortunately there's no equivalent
warning for extern declarations at rootl level in .c files.

diff -r 69fe4b8a7c09 -r 73ba1d95d1ec xen/arch/x86/Rules.mk
--- a/xen/arch/x86/Rules.mk     Thu May 26 17:17:43 2011 +0100
+++ b/xen/arch/x86/Rules.mk     Thu May 26 17:32:16 2011 +0100
@@ -27,6 +27,7 @@ CFLAGS += -I$(BASEDIR)/include/asm-x86/m
 CFLAGS += -msoft-float
 
 $(call cc-options-add,CFLAGS,CC,$(EMBEDDED_EXTRA_CFLAGS))
+$(call cc-option-add,CFLAGS,CC,-Wnested-externs)
 
 ifeq ($(supervisor_mode_kernel),y)
 CFLAGS += -DCONFIG_X86_SUPERVISOR_MODE_KERNEL=1

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