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Date: Thu, 30 Nov 2006 21:19:22 -0800
From: Andrew Morton <akpm@osdl.org>
To: Adrian Bunk <bunk@stusta.de>
Cc: linux-kernel@vger.kernel.org
Subject: Re: [2.6 patch] arch/i386/kernel/reboot.c should #include
 <linux/reboot.h>
Message-Id: <20061130211922.73112be6.akpm@osdl.org>
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On Wed, 29 Nov 2006 11:04:26 +0100
Adrian Bunk <bunk@stusta.de> wrote:

> Every file should #include the headers containing the prototypes for 
> its global functions.

--- a/Makefile~add-gcc-wmissing-prototypes
+++ a/Makefile
@@ -313,7 +313,7 @@ LINUXINCLUDE    := -Iinclude \
 CPPFLAGS        := -D__KERNEL__ $(LINUXINCLUDE)
 
 CFLAGS          := -Wall -Wundef -Wstrict-prototypes -Wno-trigraphs \
-                   -fno-strict-aliasing -fno-common
+                   -fno-strict-aliasing -fno-common -Wmissing-prototypes
 AFLAGS          := -D__ASSEMBLY__
 
 # Read KERNELRELEASE from include/config/kernel.release (if it exists)
_

Have fun...