From 94f582f82a85a941678c80c60a3baa8187c74217 Mon Sep 17 00:00:00 2001
From: "Robert P. J. Day" <rpjday@mindspring.com>
Date: Tue, 16 Oct 2007 23:26:11 -0700
Subject: [PATCH] Force erroneous inclusions of compiler-*.h files to be errors

Replace worthless comments with actual preprocessor errors when including
the wrong versions of the compiler.h files.

[akpm@linux-foundation.org: make it work]
Signed-off-by: Robert P. J. Day <rpjday@mindspring.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---
 include/linux/compiler-gcc.h   | 4 +++-
 include/linux/compiler-gcc3.h  | 4 +++-
 include/linux/compiler-gcc4.h  | 4 +++-
 include/linux/compiler-intel.h | 4 +++-
 4 files changed, 12 insertions(+), 4 deletions(-)

diff --git a/include/linux/compiler-gcc.h b/include/linux/compiler-gcc.h
index 03ec2311fb29..acd583384bd9 100644
--- a/include/linux/compiler-gcc.h
+++ b/include/linux/compiler-gcc.h
@@ -1,4 +1,6 @@
-/* Never include this file directly.  Include <linux/compiler.h> instead.  */
+#ifndef __LINUX_COMPILER_H
+#error "Please don't include <linux/compiler-gcc.h> directly, include <linux/compiler.h> instead."
+#endif
 
 /*
  * Common definitions for all gcc versions go here.
diff --git a/include/linux/compiler-gcc3.h b/include/linux/compiler-gcc3.h
index a9e2863c2dbf..2d8c0f48f55e 100644
--- a/include/linux/compiler-gcc3.h
+++ b/include/linux/compiler-gcc3.h
@@ -1,4 +1,6 @@
-/* Never include this file directly.  Include <linux/compiler.h> instead.  */
+#ifndef __LINUX_COMPILER_H
+#error "Please don't include <linux/compiler-gcc3.h> directly, include <linux/compiler.h> instead."
+#endif
 
 /* These definitions are for GCC v3.x.  */
 #include <linux/compiler-gcc.h>
diff --git a/include/linux/compiler-gcc4.h b/include/linux/compiler-gcc4.h
index 14f7494280f0..ee7ca5de970c 100644
--- a/include/linux/compiler-gcc4.h
+++ b/include/linux/compiler-gcc4.h
@@ -1,4 +1,6 @@
-/* Never include this file directly.  Include <linux/compiler.h> instead.  */
+#ifndef __LINUX_COMPILER_H
+#error "Please don't include <linux/compiler-gcc4.h> directly, include <linux/compiler.h> instead."
+#endif
 
 /* These definitions are for GCC v4.x.  */
 #include <linux/compiler-gcc.h>
diff --git a/include/linux/compiler-intel.h b/include/linux/compiler-intel.h
index b769961e6f23..d8e636e5607d 100644
--- a/include/linux/compiler-intel.h
+++ b/include/linux/compiler-intel.h
@@ -1,4 +1,6 @@
-/* Never include this file directly.  Include <linux/compiler.h> instead.  */
+#ifndef __LINUX_COMPILER_H
+#error "Please don't include <linux/compiler-intel.h> directly, include <linux/compiler.h> instead."
+#endif
 
 #ifdef __ECC
 
-- 
2.20.1