Index: src/macros.h
===================================================================
--- src/macros.h	(revision 11462)
+++ src/macros.h	(working copy)
@@ -563,6 +563,9 @@
 	return (T)(x >> n | x << (sizeof(x) * 8 - n));
 }
 
+/* Some systems (OpenBSD) already have an align macro */
+#undef ALIGN
+
 /**
  * Return the smallest multiple of n equal or greater than x
  *