From ffdb37a4f7321a7be1948c0b47fb80d448da97f5 Mon Sep 17 00:00:00 2001
From: Brad King <brad.king@kitware.com>
Date: Tue, 20 Dec 2011 13:16:45 -0500
Subject: [PATCH] Handle libarchive API change in archive_read_data_block

The offset argument type depends on the libarchive version.
---
 Source/cmSystemTools.cxx | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/Source/cmSystemTools.cxx b/Source/cmSystemTools.cxx
index 8eec1e2af..02060ca48 100644
--- a/Source/cmSystemTools.cxx
+++ b/Source/cmSystemTools.cxx
@@ -1866,7 +1866,11 @@ long copy_data(struct archive *ar, struct archive *aw)
   long r;
   const void *buff;
   size_t size;
+#if defined(ARCHIVE_VERSION_NUMBER) && ARCHIVE_VERSION_NUMBER >= 3000000
+  __LA_INT64_T offset;
+#else
   off_t offset;
+#endif
 
   for (;;)
     {