+MEMCACHEDUTIL_LIBRARY_VERSION=0:0:0
+AC_SUBST(MEMCACHEDUTIL_LIBRARY_VERSION)
+MEMCACHEDPROTOCOL_LIBRARY_VERSION=0:0:0
+AC_SUBST(MEMCACHEDPROTOCOL_LIBRARY_VERSION)
+
+
+# libmemcached versioning when linked with GNU ld.
+if test "$lt_cv_prog_gnu_ld" = "yes"
+then
+ LD_VERSION_SCRIPT="-Wl,--version-script=\$(top_srcdir)/libmemcached/libmemcached.ver"
+ LD_UTIL_VERSION_SCRIPT="-Wl,--version-script=\$(top_srcdir)/libmemcached/util/libmemcachedutil.ver"
+ LD_PROTOCOL_VERSION_SCRIPT="-Wl,--version-script=\$(top_srcdir)/libmemcached/protocol/libmemcachedprotocol.ver"
+fi
+AC_SUBST(LD_VERSION_SCRIPT)
+AC_SUBST(LD_UTIL_VERSION_SCRIPT)
+AC_SUBST(LD_PROTOCOL_VERSION_SCRIPT)