--- iperf-2.0.5/m4/dast.m4.orig	2016-06-15 11:42:03.945581785 -0400
+++ iperf-2.0.5/m4/dast.m4	2016-06-15 11:42:11.053581641 -0400
@@ -11,7 +11,12 @@
 
 AC_DEFUN(DAST_CHECK_BOOL, [
 
-AC_CHECK_SIZEOF(bool)
+if test "$ac_cv_header_stdbool_h" = yes; then
+  AC_CHECK_SIZEOF(bool,,[#include <stdbool.h>])
+else
+    AC_CHECK_SIZEOF(bool)
+fi
+
 if test "$ac_cv_sizeof_bool" = 0 ; then
   AC_DEFINE(bool, int)
 fi
