MINOR: compiler: add a new macro to set an attribute on an enum when possible
Gcc 6 and above support placing an attribute on an enum's value. This
is convenient for marking some values as deprecated. We just need the
macro because older versions fail to parse __attribute__() there.
diff --git a/include/haproxy/compiler.h b/include/haproxy/compiler.h
index a23e62a..49356da 100644
--- a/include/haproxy/compiler.h
+++ b/include/haproxy/compiler.h
@@ -207,6 +207,14 @@
})
#endif
+
+/* From gcc 6 and above, enum values may have attributes */
+#if __GNUC_PREREQ__(6, 0)
+#define ENUM_ATTRIBUTE(x) __attribute__(x)
+#else
+#define ENUM_ATTRIBUTE(x)
+#endif
+
/* Some architectures have a double-word CAS, sometimes even dual-8 bytes.
* Some architectures support unaligned accesses, others are fine with them
* but only for non-atomic operations. Also mention those supporting unaligned