--- a/Source/kwsys/SystemInformation.cxx
+++ b/Source/kwsys/SystemInformation.cxx
-@@ -89,6 +89,15 @@ typedef int siginfo_t;
- # include <ifaddrs.h>
- # define KWSYS_SYSTEMINFORMATION_IMPLEMENT_FQDN
- # endif
+@@ -82,6 +82,15 @@ typedef int siginfo_t;
+ #include <net/if.h>
+ #define KWSYS_SYSTEMINFORMATION_IMPLEMENT_FQDN
+ #endif
+# if defined(KWSYS_SYSTEMINFORMATION_HAS_BACKTRACE)
+# include <execinfo.h>
+# if defined(KWSYS_SYSTEMINFORMATION_HAS_CPP_DEMANGLE)