--- debian/rules~	2010-09-07 11:53:54.000000000 +0100
+++ debian/rules	2010-09-07 12:02:26.495082573 +0100
@@ -93,7 +93,7 @@
 	mkdir -p $(builddir)
 	chmod 755 $(CURDIR)/autogen.sh
 	./autogen.sh
-	cd $(builddir) && CFLAGS="$(CFLAGS)" $(CURDIR)/configure \
+	cd $(builddir) && CFLAGS="$(CFLAGS)" && CPPFLAGS="-DOPENLDAP_FD_SETSIZE=8192" $(CURDIR)/configure \
 		$(CONFIG) $(SYSTEM)
 	perl debian/check_config
 	$(MAKE) -C $(builddir) depend