SR_PRIV extern const struct sr_scpi_dev_inst scpi_tcp_rigol_dev;
SR_PRIV extern const struct sr_scpi_dev_inst scpi_usbtmc_dev;
SR_PRIV extern const struct sr_scpi_dev_inst scpi_vxi_dev;
SR_PRIV extern const struct sr_scpi_dev_inst scpi_tcp_rigol_dev;
SR_PRIV extern const struct sr_scpi_dev_inst scpi_usbtmc_dev;
SR_PRIV extern const struct sr_scpi_dev_inst scpi_vxi_dev;