--- a/common/dumpstrm.cc
+++ b/common/dumpstrm.cc
@@ -13,6 +13,7 @@
 
 #include <cstdio> // sprintf
 #include <iostream>
+#include <cstdlib>
 #include "dumpstrm.h"
 
 using std::cerr;
--- a/common/logic.h
+++ b/common/logic.h
@@ -18,6 +18,7 @@
 
 #ifndef _LOGIC_H
 #define _LOGIC_H
+#include <cstdlib>
 
 class logic
 	{
--- a/common/bvector.h
+++ b/common/bvector.h
@@ -30,6 +30,7 @@
 #include <string>
 #include <utility>
 #include <iostream>
+#include <cstring>
 #include "common/logic.h"
 
 class bit_vector