-#include <errno.h>
-#if !defined (__STRICT_ANSI__) && !defined (__HIDE_FORBIDDEN_NAMES)
-extern char *strerror PARAMS ((int,...));
-#define DONT_DECLARE_STRERROR
-#endif
-#endif /* VMS */
+# include <errno.h>
+# if !defined (__STRICT_ANSI__) && !defined (__HIDE_FORBIDDEN_NAMES)
+# ifdef __cplusplus
+extern "C" {
+# endif /* __cplusplus */
+extern char *strerror (int,...);
+# define DONT_DECLARE_STRERROR
+# ifdef __cplusplus
+}
+# endif /* __cplusplus */
+# endif
+#endif /* VMS */
+