+AC_CHECK_LIB(dl, dlopen, [ AC_CHECK_HEADERS(dlfcn.h, HAVE_DLOPEN=yes, HAVE_DLOPEN=no) ], HAVE_DLOPEN=no)
+if test "x$HAVE_DLOPEN" = "xyes" ; then
+ AC_DEFINE([HAVE_DLOPEN],1,[Have dlopen()])
+fi
+AM_CONDITIONAL(HAVE_DLOPEN, test "x$HAVE_DLOPEN" = "xyes")
+