--- htop-0.9.orig/CRT.h	2010-11-23 16:56:32.000000000 +0100
+++ htop-0.9/CRT.h	2011-05-31 14:30:32.000000000 +0200
@@ -14,7 +14,9 @@
 #include <signal.h>
 #include <stdlib.h>
 #include <stdbool.h>
+#ifdef HAVE_EXECINFO_H
 #include <execinfo.h>
+#endif
 
 #include "String.h"