Author: kib
Date: Sun Aug 15 14:38:01 2010
New Revision: 211335
URL: http://svn.freebsd.org/changeset/base/211335
Log:
Add convenience defines for hidden and default/exported attributes.
MFC after: 2 weeks
Modified:
head/sys/sys/cdefs.h
Modified: head/sys/sys/cdefs.h
==============================================================================
--- head/sys/sys/cdefs.h Sun Aug 15 14:11:58 2010 (r211334)
+++ head/sys/sys/cdefs.h Sun Aug 15 14:38:01 2010 (r211335)
@@ -305,6 +305,14 @@
#define __predict_false(exp) (exp)
#endif
+#if __GNUC_PREREQ__(4, 2)
+#define __hidden __attribute((visibility("hidden")))
+#define __exported __attribute((visibility("default")))
+#else
+#define __hidden
+#define __exported
+#endif
+
/*
* We define this here since <stddef.h>, <sys/queue.h>, and <sys/types.h>
* require it.
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