Clean up gcc attributes

We have a number of explicit __GNUC__ conditionals to tell if we want to
use some gcc extensions for extra warnings.  This cleans this up to use
a single conditional, defining convenience macros for those attributes.

Signed-off-by: David Gibson <david@gibson.dropbear.id.au>

1 files changed, 1 insertions, 6 deletions

diff --git a/dtc-lexer.l b/dtc-lexer.l
index 52bed7b..fd825eb 100644
--- a/dtc-lexer.l
+++ b/dtc-lexer.l
@@ -62,12 +62,7 @@ static int dts_version = 1;
 
 static void push_input_file(const char *filename);
 static bool pop_input_file(void);
-#ifdef __GNUC__
-static void lexical_error(const char *fmt, ...)
-	__attribute__((format (printf, 1, 2)));
-#else
-static void lexical_error(const char *fmt, ...);
-#endif
+static void PRINTF(1, 2) lexical_error(const char *fmt, ...);
 
 %}