+AC_MSG_CHECKING(sstream)
+ if [ test -f /usr/include/sstream || test -f /usr/include/g++/sstream ||
+ test -f /usr/include/g++-2/sstream || test -f /usr/include/g++-3/sstream ]; then
+ AC_DEFINE(HAVE_SSTREAM)
+ AC_MSG_RESULT(yes)
+fi
+AC_MSG_RESULT(no)
+