+#ifdef HAVE_HW_AGILENT_DMM
+extern SR_PRIV struct sr_dev_driver agdmm_driver_info;
+#endif
+#ifdef HAVE_HW_FLUKE_DMM
+extern SR_PRIV struct sr_dev_driver flukedmm_driver_info;
+#endif
+#ifdef HAVE_HW_RADIOSHACK_DMM
+extern SR_PRIV struct sr_dev_driver radioshackdmm_driver_info;
+#endif
+#ifdef HAVE_HW_TEKPOWER_DMM
+extern SR_PRIV struct sr_dev_driver tekpower_dmm_driver_info;
+#endif
+#ifdef HAVE_HW_UNI_T_DMM
+extern SR_PRIV struct sr_dev_driver uni_t_ut61d_driver_info;
+extern SR_PRIV struct sr_dev_driver voltcraft_vc820_driver_info;
+#endif
+/** @endcond */