diff -urNp -x '*.orig' openldap-2.4.49.org/build/openldap.m4 openldap-2.4.49/build/openldap.m4
--- openldap-2.4.49.org/build/openldap.m4	2020-01-30 18:58:35.000000000 +0100
+++ openldap-2.4.49/build/openldap.m4	2021-05-07 23:04:39.855526618 +0200
@@ -599,6 +599,7 @@ AC_DEFUN([OL_PTHREAD_TEST_INCLUDES], [[
 static void *task(p)
 	void *p;
 {
+	sleep(30);
 	return (void *) (p == NULL);
 }
 ]])