+#if BUILD_REMOTE_BITBANG == 1
+extern struct jtag_interface remote_bitbang_interface;
+#endif
+#if BUILD_STLINK == 1
+extern struct jtag_interface stlink_interface;
+#endif
+#if BUILD_OSBDM == 1
+extern struct jtag_interface osbdm_interface;
+#endif
+#if BUILD_OPENDOUS == 1
+extern struct jtag_interface opendous_interface;
+#endif
+#if BUILD_SYSFSGPIO == 1
+extern struct jtag_interface sysfsgpio_interface;
+#endif
+#endif /* standard drivers */