1obj-$(CONFIG_MCTP_SERIAL) += mctp-serial.o 2obj-$(CONFIG_MCTP_TRANSPORT_I2C) += mctp-i2c.o 3obj-$(CONFIG_MCTP_TRANSPORT_I3C) += mctp-i3c.o 4obj-$(CONFIG_MCTP_TRANSPORT_USB) += mctp-usb.o 5