From c0840e91d37241051c7d8ceb128536b6209e43a5 Mon Sep 17 00:00:00 2001
From: Tim Kientzle <kientzle@FreeBSD.org>
Date: Mon, 28 Dec 2009 02:26:06 +0000
Subject: [PATCH] Discourage outside use of this internal header.

---
 lib/libarchive/archive_string.h | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/lib/libarchive/archive_string.h b/lib/libarchive/archive_string.h
index 56ca7ca31805..68fbf167e734 100644
--- a/lib/libarchive/archive_string.h
+++ b/lib/libarchive/archive_string.h
@@ -26,6 +26,10 @@
  *
  */
 
+#ifndef __LIBARCHIVE_BUILD
+#error This header is only to be used internally to libarchive.
+#endif
+
 #ifndef ARCHIVE_STRING_H_INCLUDED
 #define	ARCHIVE_STRING_H_INCLUDED