diff --git a/configure.ac.tpl b/configure.ac.tpl
index 4e5e015..d02eb7a 100644
--- a/configure.ac.tpl
+++ b/configure.ac.tpl
@@ -95,6 +95,16 @@ AC_CHECK_FUNC(funopen, AC_DEFINE(HAVE_FUNOPEN))
 
 AC_CHECK_HEADER(sys/sysctl.h, AC_DEFINE(HAVE_SYS_SYSCTL_H))
 
+AC_ARG_WITH([openssldir],
+	AS_HELP_STRING([--with-openssldir], [Set the default openssl directory]),
+	AC_DEFINE_UNQUOTED(OPENSSLDIR, "$withval")
+])
+
+AC_ARG_WITH([enginesdir],
+	AS_HELP_STRING([--with-enginesdir], [Set the default engines directory (use with openssldir)]),
+	AC_DEFINE_UNQUOTED(ENGINESDIR, "$withval")
+])
+
 LT_INIT
 
 AC_CONFIG_FILES([