1 files changed, 5 insertions, 4 deletions
diff --git a/Source/kwsys/SystemInformation.hxx.in b/Source/kwsys/SystemInformation.hxx.in
index 9d073c4c31..b6ebe6aee5 100644
--- a/Source/kwsys/SystemInformation.hxx.in
+++ b/Source/kwsys/SystemInformation.hxx.in
@@ -19,6 +19,7 @@
 # define kwsys_ios @KWSYS_NAMESPACE@_ios
 #endif
 #include <@KWSYS_NAMESPACE@/stl/string>
+#include <stddef.h> /* size_t */
 
 namespace @KWSYS_NAMESPACE@
 {
@@ -63,10 +64,10 @@ public:
   bool DoesCPUSupportCPUID();
 
   // Retrieve memory information in megabyte.
-  unsigned long GetTotalVirtualMemory();
-  unsigned long GetAvailableVirtualMemory();
-  unsigned long GetTotalPhysicalMemory();
-  unsigned long GetAvailablePhysicalMemory();  
+  size_t GetTotalVirtualMemory();
+  size_t GetAvailableVirtualMemory();
+  size_t GetTotalPhysicalMemory();
+  size_t GetAvailablePhysicalMemory();  
 
   /** Run the different checks */
   void RunCPUCheck();