+ if test x"$ac_cv_header_iostream" = xyes ; then
+ AC_MSG_CHECKING(if iostream uses std-namespace)
+ AC_TRY_COMPILE([
+#include <iostream>
+using std::endl;
+using std::cerr;],[
+cerr << "testing" << endl;
+],[cf_iostream_namespace=yes],[cf_iostream_namespace=no])
+ AC_MSG_RESULT($cf_iostream_namespace)
+ if test "$cf_iostream_namespace" = yes ; then
+ AC_DEFINE(IOSTREAM_NAMESPACE)
+ fi
+ fi
+