point build action to new target

Makefile

@@ -8,10 +8,24 @@ BOARD=sensorwatch_green
 # Leave this line here.
 include $(GOSSAMER_PATH)/make.mk
 
+# this is a hack and does not currently work; we need to integrate a bit of
+# emscripten support into gossamer to actually build for the simulator
+ifdef EMSCRIPTEN
+BUILD = ./build-sim
+CC = emcc
+all: $(BUILD)/$(BIN).html
+$(BUILD)/$(BIN).html: $(OBJS)
+	@echo HTML $@
+	@$(CC) $(LDFLAGS) $(OBJS) $(LIBS) -o $@ \
+		-s ASYNCIFY=1 \
+		-s EXPORTED_RUNTIME_METHODS=lengthBytesUTF8,printErr \
+		-s EXPORTED_FUNCTIONS=_main \
+		--shell-file=$(TOP)/watch-library/simulator/shell.html
+endif
+
 # Add your source files here.
 SRCS += \
   ./movement.c \
 
 # Finally, leave this line at the bottom of the file.
 include $(GOSSAMER_PATH)/rules.mk
-