-apps= apps/monitor/monitor.c apps/spi/spi.c apps/i2c/i2c.c apps/chipcon/chipcon.c apps/jtag/jtag.c apps/jtag/jtag430.c
-libs= lib/msp430f1612.c lib/command.c
-app=goodfet
+
+#One of these should be defined explicitly.
+#Default removed because of confusion.
+
+#mcu=msp430x2274
+#mcu=msp430x2618
+#mcu?=msp430x1612
+mcu?=RUNCONFIG
+
+#platform=goodfet
+#platform=telosb
+#platform=z1
+platform?=goodfet
+
+#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$(mcu) -D$(platform) -Dplatform=$(platform) -DGCC $(GCCINC) -I include $(CCEXTRA)
+
+#Define extra modules here.
+#moreapps?=apps/i2c/i2c.o apps/glitch/glitch.o apps/jtag/sbw.o apps/smartcard/smartcard.o apps/jtag/ejtag.o apps/jtag/jtagxscale.o
+moreapps?=apps/jtag/sbw.o apps/glitch/glitch.o apps/jtag/jtagarm7.o
+# should include apps/jtag/jtagarm7tdmi.o to build jtag for ARM7
+# should include apps/pic/dspic33f.o to build support for PIC24H/dsPIC33F
+# should include apps/adc/adc.o to build support for ADC10 app (still specific to x2274, GoodFET31).
+
+apps= $(moreapps) apps/chipcon/chipcon.o apps/radios/nrf.o apps/radios/ccspi.o apps/monitor/monitor.o apps/spi/spi.o apps/jtag/jtag.o apps/jtag/jtag430.o apps/jtag/jtag430x2.o apps/avr/avr.o
+
+#apps/chipcon/chipconasm.o removed
+libs= lib/$(mcu).o lib/command.o apps/jtag/jtag430asm.o lib/dco_calib.o
+
+app= goodfet