Index: extern.h
===================================================================
RCS file: /home/cvs/mdocml/texi2mdoc/extern.h,v
retrieving revision 1.16
retrieving revision 1.17
diff -u -p -r1.16 -r1.17
--- extern.h	25 Feb 2015 14:49:14 -0000	1.16
+++ extern.h	25 Feb 2015 19:45:59 -0000	1.17
@@ -1,4 +1,4 @@
-/*	$Id: extern.h,v 1.16 2015/02/25 14:49:14 kristaps Exp $ */
+/*	$Id: extern.h,v 1.17 2015/02/25 19:45:59 kristaps Exp $ */
 /*
  * Copyright (c) 2015 Kristaps Dzonsons <kristaps@bsd.lv>
  *
@@ -16,6 +16,21 @@
  */
 #ifndef EXTERN_H
 #define EXTERN_H
+
+#if !defined(__BEGIN_DECLS)
+#  ifdef __cplusplus
+#  define	__BEGIN_DECLS		extern "C" {
+#  else
+#  define	__BEGIN_DECLS
+#  endif
+#endif
+#if !defined(__END_DECLS)
+#  ifdef __cplusplus
+#  define	__END_DECLS		}
+#  else
+#  define	__END_DECLS
+#  endif
+#endif
 
 /*
  * This defines each one of the Texinfo commands that we understand.