diff --git a/src/core/wscript b/src/core/wscript
index a2d3cfd35..4eae736af 100644
--- a/src/core/wscript
+++ b/src/core/wscript
@@ -82,7 +82,7 @@ int main ()
 
     conf.check_nonfatal(header_name='sys/inttypes.h', define_name='HAVE_SYS_INT_TYPES_H')
 
-    if not conf.check_nonfatal(lib='rt', uselib_store='RT', define_name='HAVE_RT'):
+    if not conf.check_nonfatal(lib='rt', uselib='RT, PTHREAD', define_name='HAVE_RT'):
         conf.report_optional_feature("RealTime", "Real Time Simulator",
                                      False, "librt is not available")
     else:
diff --git a/src/network/utils/ipv6-address.cc b/src/network/utils/ipv6-address.cc
index 4d268dd75..e5b5e5492 100644
--- a/src/network/utils/ipv6-address.cc
+++ b/src/network/utils/ipv6-address.cc
@@ -19,6 +19,7 @@
  */
 
 #include <iomanip>
+#include <memory.h>
 
 #include "ns3/log.h"
 #include "ns3/assert.h"