diff -ru cmake-2.6.4.orig/Source/kwsys/ProcessUNIX.c cmake-2.6.4/Source/kwsys/ProcessUNIX.c
--- cmake-2.6.4.orig/Source/kwsys/ProcessUNIX.c	2010-02-18 08:47:44 +0100
+++ cmake-2.6.4/Source/kwsys/ProcessUNIX.c	2010-02-18 09:19:25 +0100
@@ -2444,6 +2444,9 @@
 
 /* The old SIGCHLD handler.  */
 static struct sigaction kwsysProcessesOldSigChldAction;
+#ifdef __INTERIX
+static struct sigaction kwsysProcessesOldSigAlrmAction;
+#endif
 
 /*--------------------------------------------------------------------------*/
 static void kwsysProcessesUpdate(kwsysProcessInstances* newProcesses)
@@ -2561,6 +2564,14 @@
     while((sigaction(SIGCHLD, &newSigChldAction,
                      &kwsysProcessesOldSigChldAction) < 0) &&
           (errno == EINTR));
+
+#ifdef __INTERIX
+	while((sigaction(SIGALRM, &newSigChldAction,
+					 &kwsysProcessesOldSigAlrmAction) < 0) &&
+		  (errno == EINTR));
+	
+	alarm(1);
+#endif
     }
   }
 
@@ -2599,6 +2610,13 @@
       while((sigaction(SIGCHLD, &kwsysProcessesOldSigChldAction, 0) < 0) &&
             (errno == EINTR));
 
+#ifdef __INTERIX
+	  alarm(0);
+
+      while((sigaction(SIGALRM, &kwsysProcessesOldSigAlrmAction, 0) < 0) &&
+            (errno == EINTR));
+#endif
+
       /* Free the table of process pointers since it is now empty.
          This is safe because the signal handler has been removed.  */
       newProcesses.Size = 0;
@@ -2653,6 +2671,11 @@
   while((sigaction(SIGCHLD, &newSigChldAction,
                    &kwsysProcessesOldSigChldAction) < 0) &&
         (errno == EINTR));
+#ifdef __INTERIX
+  while((sigaction(SIGALRM, &newSigChldAction,
+                   &kwsysProcessesOldSigAlrmAction) < 0) &&
+        (errno == EINTR));
+#endif
   }
 #endif
 }