--- a/src/core/breakpoint.cc Mon Aug 06 14:40:43 2007 -0700 +++ b/src/core/breakpoint.cc Tue Aug 07 00:16:13 2007 +0100 @@ -28,7 +28,7 @@ namespace ns3 { -#ifdef HAVE_SIGNAL_H +#if defined (HAVE_SIGNAL_H) && defined (SIGTRAP) void BreakpointFallback (void)