From 672ac09ea04d998dfddfdef3070a8af8d480182b Mon Sep 17 00:00:00 2001
From: David Gibson <david@gibson.dropbear.id.au>
Date: Mon, 6 Mar 2017 12:06:15 +1100
Subject: 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>
---
 util.h | 30 ++++++++++++++----------------
 1 file changed, 14 insertions(+), 16 deletions(-)

(limited to 'util.h')

diff --git a/util.h b/util.h
index bc3d223..ad5f411 100644
--- a/util.h
+++ b/util.h
@@ -25,15 +25,17 @@
  *                                                                   USA
  */
 
-#define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0]))
-
 #ifdef __GNUC__
-static inline void
-__attribute__((noreturn)) __attribute__((format (printf, 1, 2)))
-die(const char *str, ...)
+#define PRINTF(i, j)	__attribute__((format (printf, i, j)))
+#define NORETURN	__attribute__((noreturn))
 #else
-static inline void die(const char *str, ...)
+#define PRINTF(i, j)
+#define NORETURN
 #endif
+
+#define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0]))
+
+static inline void NORETURN PRINTF(1, 2) die(const char *str, ...)
 {
 	va_list ap;
 
@@ -66,12 +68,7 @@ static inline void *xrealloc(void *p, size_t len)
 
 extern char *xstrdup(const char *s);
 
-#ifdef __GNUC__
-extern int __attribute__((format (printf, 2, 3)))
-xasprintf(char **strp, const char *fmt, ...);
-#else
-extern int xasprintf(char **strp, const char *fmt, ...);
-#endif
+extern int PRINTF(2, 3) xasprintf(char **strp, const char *fmt, ...);
 extern char *join_path(const char *path, const char *name);
 
 /**
@@ -200,7 +197,7 @@ void utilfdt_print_data(const char *data, int len);
 /**
  * Show source version and exit
  */
-void util_version(void) __attribute__((noreturn));
+void NORETURN util_version(void);
 
 /**
  * Show usage and exit
@@ -214,9 +211,10 @@ void util_version(void) __attribute__((noreturn));
  * @param long_opts	The structure of long options
  * @param opts_help	An array of help strings (should align with long_opts)
  */
-void util_usage(const char *errmsg, const char *synopsis,
-		const char *short_opts, struct option const long_opts[],
-		const char * const opts_help[]) __attribute__((noreturn));
+void NORETURN util_usage(const char *errmsg, const char *synopsis,
+			 const char *short_opts,
+			 struct option const long_opts[],
+			 const char * const opts_help[]);
 
 /**
  * Show usage and exit
-- 
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