commit 17359301bfcecbae70bd8d671813a8702bb5ef9b
author Jens Axboe <axboe@fb.com> Tue Oct 21 08:07:33 2014 -0600
committer Mohamad Ayyash <mkayyash@google.com> Fri Mar 06 17:57:25 2015 -0800
tree 43c795e904b107618e571ebf92be5e00b4ece2f3
parent f45d32be3a9f4a8b21d4637235ecf5dee9d951e4

compiler: improve gcc 4.x compile time check

Signed-off-by: Jens Axboe <axboe@fb.com>

compiler/compiler-gcc4.h

diff --git a/compiler/compiler-gcc4.h b/compiler/compiler-gcc4.h
index f136611..e8701cf 100644
--- a/compiler/compiler-gcc4.h
+++ b/compiler/compiler-gcc4.h
@@ -5,4 +5,13 @@
 #define __must_check		__attribute__((warn_unused_result))
 #endif
 
+#define GCC_VERSION (__GNUC__ * 10000		\
+			+ __GNUC_MINOR__ * 100	\
+			+ __GNUC_PATCHLEVEL__)
+
+#if GCC_VERSION >= 40300
+#define __compiletime_warning(message)	__attribute__((warning(message)))
+#define __compiletime_error(message)	__attribute__((error(message)))
+#endif
+
 #endif