diff --git a/Makefile b/Makefile
index f2a8466..039a3e4 100644
--- a/Makefile
+++ b/Makefile
@@ -38,10 +38,14 @@ SOEXT=dylib
 .error Unsupported platform: $(PLATFORM)
 .endif
 
-PROG = lora.irr
 PROGEXT = .elf
 
-SRCS = main.c
+PROGS = lora.gw lora.irr
+
+SRCS.lora.gw = main.c
+
+SRCS.lora.irr = irr_main.c
+
 SRCS+= board.c
 SRCS+= misc.c
 SRCS+= strobe_rng_init.c
@@ -120,7 +124,6 @@ SRCS+=				\
 
 CFLAGS+= -I$(STM32)/usb
 
-OBJS = $(SRCS:C/.c$/.o/)
 CFLAGS+= -Werror -Wall
 
 LIBLORA_TEST_SRCS= comms.c strobe.c x25519.c
@@ -132,7 +135,6 @@ $(LIBLORA_TEST): $(LIBLORA_TEST_OBJS)
 
 .MAIN: all
 .PHONY: all
-all: $(PROG)$(PROGEXT) $(PROG).list
 
 DEPENDS = .arm_deps .test_deps
 .PHONY: depend
@@ -157,11 +159,19 @@ rng_save.c: Makefile
 .test_deps: $(LIBLORA_TEST_SRCS)
 	$(CC) $(CFLAGS) $(.ALLSRC) -MM | sed -e 's/\.o:/\.no:/' > $@ || (rm -f $@ && false)
 
-$(PROG)$(PROGEXT) $(PROG).map: $(OBJS)
-	$(ARMCC) $(ARMTARGET) -o $(PROG)$(PROGEXT) $(.ALLSRC) -T$(LINKER_SCRIPT) --specs=nosys.specs -Wl,-Map="$(PROG).map" -Wl,--gc-sections -static --specs=nano.specs -Wl,--start-group -lc -lm -Wl,--end-group
+.for i in $(PROGS)
+ALLTGTS+= $(i)$(PROGEXT) $(i).list
+ASRCS.$(i) = $(SRCS) $(SRCS.$(i))
+OBJS.$(i) = $(ASRCS.$(i):C/.c$/.o/)
 
-$(PROG).list: $(PROG)$(PROGEXT)
+$(i)$(PROGEXT) $(i).map: $(OBJS.$(i))
+	$(ARMCC) $(ARMTARGET) -o $(i)$(PROGEXT) $(.ALLSRC) -T$(LINKER_SCRIPT) --specs=nosys.specs -Wl,-Map="$(i).map" -Wl,--gc-sections -static --specs=nano.specs -Wl,--start-group -lc -lm -Wl,--end-group
+
+$(i).list: $(i)$(PROGEXT)
 	$(ARMOBJDUMP) -h -S $(.ALLSRC) > $@ || (rm -f $@ && false)
+.endfor
+
+all: $(ALLTGTS)
 
 .PHONY: runbuild
 runbuild: $(SRCS)
diff --git a/irr_main.c b/irr_main.c
new file mode 100644
index 0000000..df67b91
--- /dev/null
+++ b/irr_main.c
@@ -0,0 +1,4 @@
+int
+main()
+{
+}