commit f0bcd186190fe6e67b3f0eaaceb7a99aa6a98865
Author: Steven Morgan <stevmorg@cisco.com>
Date:   Thu Jan 5 12:30:35 2017 -0500

    bb111711 - fix zlib version check - patch by Daniel J. Luke.

diff --git a/m4/reorganization/libs/libz.m4 b/m4/reorganization/libs/libz.m4
index b5c7414..f7b67ca 100644
--- a/m4/reorganization/libs/libz.m4
+++ b/m4/reorganization/libs/libz.m4
@@ -29,9 +29,9 @@ then
     AC_MSG_ERROR([Please install zlib and zlib-devel packages])
 else
 
-    vuln=`grep "ZLIB_VERSION \"1.2.0" $ZLIB_HOME/include/zlib.h`
+    vuln=`grep "ZLIB_VERSION \"1.2.0\"" $ZLIB_HOME/include/zlib.h`
     if test -z "$vuln"; then
-	vuln=`grep "ZLIB_VERSION \"1.2.1" $ZLIB_HOME/include/zlib.h`
+	vuln=`grep "ZLIB_VERSION \"1.2.1\"" $ZLIB_HOME/include/zlib.h`
     fi
 
     if test -n "$vuln"; then