diff --git a/base/remote_gdb.cc b/base/remote_gdb.cc
index 0289f29db6..a7893cdf71 100644
--- a/base/remote_gdb.cc
+++ b/base/remote_gdb.cc
@@ -91,6 +91,7 @@
 
 #include <unistd.h>
 
+#include <cstdio>
 #include <string>
 
 #include "cpu/exec_context.hh"
diff --git a/sim/sim_time.cc b/sim/sim_time.cc
index 3d91eba834..70483d9a29 100644
--- a/sim/sim_time.cc
+++ b/sim/sim_time.cc
@@ -132,21 +132,21 @@ namespace Time
     ostream &
     operator<<(ostream &out, const Start &start)
     {
-        out << ::ctime(&start.get().tv_sec);
+        out << ::ctime((const time_t *)&start.get().tv_sec);
         return out;
     }
 
     ostream &
     operator<<(ostream &out, const Now &now)
     {
-        out << ::ctime(&now.get().tv_sec);
+        out << ::ctime((const time_t *)&now.get().tv_sec);
         return out;
     }
 
     ostream &
     operator<<(ostream &out, const Elapsed &elapsed)
     {
-        out << ::ctime(&elapsed.get().tv_sec);
+        out << ::ctime((const time_t *)&elapsed.get().tv_sec);
         return out;
     }
 }
diff --git a/sim/sim_time.hh b/sim/sim_time.hh
index dbba42aa7e..af69c33211 100644
--- a/sim/sim_time.hh
+++ b/sim/sim_time.hh
@@ -29,6 +29,8 @@
 #ifndef __SIM_TIME_HH__
 #define __SIM_TIME_HH__
 
+#include <sys/time.h>
+
 #include <iosfwd>
 
 namespace Time {