alt definition for STANDARD_GNU89 & friends

It may be useful to known the base standard and if we're using
the gnu extensions but as these are defined it can only be done
on a case-by-case basis.

Change these defines so that:
* the GNU extensions is the least significant bit
* the versions can be easily compared with <, >, <= and >=

Signed-off-by: Luc Van Oostenryck <luc.vanoostenryck@gmail.com>

1 files changed, 6 insertions, 3 deletions

diff --git a/lib.h b/lib.h
index 1eb45561..7958359c 100644
--- a/lib.h
+++ b/lib.h
@@ -225,13 +225,16 @@ enum {
 extern int arch_cmodel;
 
 enum standard {
+	STANDARD_NONE,
+	STANDARD_GNU,
 	STANDARD_C89,
+	STANDARD_GNU89 = STANDARD_C89 | STANDARD_GNU,
 	STANDARD_C94,
+	STANDARD_GNU94 = STANDARD_C94 | STANDARD_GNU,
 	STANDARD_C99,
+	STANDARD_GNU99 = STANDARD_C99 | STANDARD_GNU,
 	STANDARD_C11,
-	STANDARD_GNU11,
-	STANDARD_GNU89,
-	STANDARD_GNU99,
+	STANDARD_GNU11 = STANDARD_C11 | STANDARD_GNU,
 };
 extern enum standard standard;