-apps= apps/monitor/monitor.o apps/spi/spi.o apps/i2c/i2c.o apps/chipcon/chipcon.o apps/jtag/jtag.o apps/jtag/jtag430.o
-libs= lib/msp430f1612.o lib/command.o apps/jtag/jtag430asm.o
-app=goodfet
+#One of these should be defined explicitly.
+#Default removed because of confusion.
+
+#mcu=msp430x2274
+#mcu=msp430x2618
+#mcu?=msp430x1612
+mcu?=RUNCONFIG
+
+#N.B., gcc WILL NOT BITCH if this file doesn't exist.
+#GCCINC=-T ldscripts/161x.x
+GCCINC=-T ldscripts/$(mcu).x
+
+CCEXTRA?=
+CC=msp430-gcc -Wall -Os -g -mmcu=$(mcu) -D$(mcu) -DGCC $(GCCINC) -I include $(CCEXTRA)
+
+#Define extra modules here.
+moreapps?=apps/i2c/i2c.o apps/chipcon/chipcon.o
+
+apps= $(moreapps) apps/monitor/monitor.o apps/spi/spi.o apps/jtag/jtag.o apps/jtag/jtag430.o apps/jtag/jtag430x2.o apps/avr/avr.o
+libs= lib/$(mcu).o lib/command.o apps/jtag/jtag430asm.o
+app= goodfet