AC_MSG_CHECKING(which MPM to use)
AC_ARG_WITH(mpm,
APACHE_HELP_STRING(--with-mpm=MPM,Choose the process model for Apache to use.
-- MPM={beos|event|worker|prefork|mpmt_os2}),[
-+ MPM={beos|event|worker|prefork|mpmt_os2|itk}),[
+- MPM={beos|event|worker|prefork|mpmt_os2|winnt}),[
++ MPM={beos|event|worker|prefork|mpmt_os2|winnt|itk}),[
APACHE_MPM=$withval
],[
if test "x$APACHE_MPM" = "x"; then