Refactor __attribute__ usage

Use internal macros for compatibility with non GNUC compilers.

1 files changed, 16 insertions, 0 deletions

diff --git a/Macros.h b/Macros.h
index cb84b291..ef4e8908 100644
--- a/Macros.h
+++ b/Macros.h
@@ -13,4 +13,20 @@
 #define CLAMP(x, low, high)	(((x) > (high)) ? (high) : MAXIMUM(x, low))
 #endif
 
+#ifdef  __GNUC__  // defined by GCC and Clang
+
+#define ATTR_FORMAT(type, index, check) __attribute__((format (type, index, check)))
+#define ATTR_NONNULL                    __attribute__((nonnull))
+#define ATTR_NORETURN                   __attribute__((noreturn))
+#define ATTR_UNUSED                     __attribute__((unused))
+
+#else /* __GNUC__ */
+
+#define ATTR_FORMAT(type, index, check)
+#define ATTR_NONNULL
+#define ATTR_NORETURN
+#define ATTR_UNUSED
+
+#endif /* __GNUC__ */
+
 #endif