diff --git a/src/arch/sparc/remote_gdb.cc b/src/arch/sparc/remote_gdb.cc
index 1298e327ee..cafd1799f6 100644
--- a/src/arch/sparc/remote_gdb.cc
+++ b/src/arch/sparc/remote_gdb.cc
@@ -116,6 +116,7 @@
  * "Stub" to allow remote cpu to debug over a serial line using gdb.
  */
 
+#include <signal.h>
 #include <sys/signal.h>
 #include <unistd.h>
 
diff --git a/src/base/remote_gdb.cc b/src/base/remote_gdb.cc
index af6857a36f..49b7ce50d2 100644
--- a/src/base/remote_gdb.cc
+++ b/src/base/remote_gdb.cc
@@ -116,6 +116,7 @@
  * "Stub" to allow remote cpu to debug over a serial line using gdb.
  */
 
+#include <signal.h>
 #include <sys/signal.h>
 #include <unistd.h>
 
diff --git a/src/sim/syscall_emul.hh b/src/sim/syscall_emul.hh
index b5a8e49d4b..aec1598388 100644
--- a/src/sim/syscall_emul.hh
+++ b/src/sim/syscall_emul.hh
@@ -33,7 +33,8 @@
 #define __SIM_SYSCALL_EMUL_HH__
 
 #define NO_STAT64 (defined(__APPLE__) || defined(__OpenBSD__) || \
-                   defined(__FreeBSD__) || defined(__CYGWIN__))
+  defined(__FreeBSD__) || defined(__CYGWIN__) || \
+  defined(__NetBSD__))
 
 ///
 /// @file syscall_emul.hh