+ if test x"$ac_cv_header_iostream" = xyes ; then
+ echo "$as_me:14785: checking if iostream uses std-namespace" >&5
+echo $ECHO_N "checking if iostream uses std-namespace... $ECHO_C" >&6
+ cat >conftest.$ac_ext <<_ACEOF
+#line 14788 "configure"
+#include "confdefs.h"
+
+#include <iostream>
+using std::endl;
+using std::cerr;
+int
+main ()
+{
+
+cerr << "testing" << endl;
+
+ ;
+ return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:14805: \"$ac_compile\"") >&5
+ (eval $ac_compile) 2>&5
+ ac_status=$?
+ echo "$as_me:14808: \$? = $ac_status" >&5
+ (exit $ac_status); } &&
+ { ac_try='test -s conftest.$ac_objext'
+ { (eval echo "$as_me:14811: \"$ac_try\"") >&5
+ (eval $ac_try) 2>&5
+ ac_status=$?
+ echo "$as_me:14814: \$? = $ac_status" >&5
+ (exit $ac_status); }; }; then
+ cf_iostream_namespace=yes
+else
+ echo "$as_me: failed program was:" >&5
+cat conftest.$ac_ext >&5
+cf_iostream_namespace=no
+fi
+rm -f conftest.$ac_objext conftest.$ac_ext
+ echo "$as_me:14823: result: $cf_iostream_namespace" >&5
+echo "${ECHO_T}$cf_iostream_namespace" >&6
+ if test "$cf_iostream_namespace" = yes ; then
+ cat >>confdefs.h <<\EOF
+#define IOSTREAM_NAMESPACE 1
+EOF
+
+ fi
+ fi
+
+echo "$as_me:14833: checking if we should include stdbool.h" >&5