+# List of device families per architecture, one device per architecture sub-family\r
+AVR8_FAMILIES = at90usb1287 at90usb1286 atmega16u4 atmega16u2 at90usb162\r
+XMEGA_FAMILIES = atxmega128a1u atxmega128a3u atxmega256a3bu atxmega128a4u atxmega128b1 atxmega128b3 atxmega128c3 atxmega32c4\r
+UC3_FAMILIES = uc3a0256 uc3a1256 uc3a3256 uc3a4256 uc3b0256 uc3b1256\r
+\r
+# List of all device families, with a family postfix\r
+DEVICE_FAMILIES = $(AVR8_FAMILIES:%=%.avr8) $(XMEGA_FAMILIES:%=%.xmega) $(UC3_FAMILIES:%=%.uc3)\r
+\r
+\r
+all: begin $(DEVICE_FAMILIES) clean end\r