Copy resources in HelloCpp makefile

samples/Cpp/HelloCpp/proj.emscripten/Makefile

@@ -8,9 +8,11 @@ SOURCES = main.cpp \
 
 RESOURCE_PATH = ../Resources/iphone
 
-RESOURCE_FLAGS = --preload CloseNormal.png \
-                 --preload CloseSelected.png \
-                 --preload HelloWorld.png
+RESOURCES = CloseNormal.png \
+            CloseSelected.png \
+            HelloWorld.png
+
+FONT_PATH = ../Resources/fonts
 
 COCOS_ROOT = ../../../..
 include $(COCOS_ROOT)/cocos2dx/proj.emscripten/cocos2dx.mk
@@ -22,12 +24,19 @@ $(TARGET).js: $(OBJECTS) $(STATICLIBS) $(COCOS_LIBS) $(CORE_MAKEFILE_LIST)
 	@mkdir -p $(@D)
 	$(CXX) $(CXXFLAGS) $(OBJECTS) -o $@ $(SHAREDLIBS) $(STATICLIBS)
 
-# TODO: Make this rule not an egregious hack.
 $(TARGET).data:
 	@mkdir -p $(@D)
-	(cd $(RESOURCE_PATH); python $(PACKAGER) $(EXECUTABLE).data $(RESOURCE_FLAGS) --pre-run) > $(RESOURCE_PATH)/$(EXECUTABLE).data.js
-	mv $(RESOURCE_PATH)/$(EXECUTABLE).data $@
-	mv $(RESOURCE_PATH)/$(EXECUTABLE).data.js $@.js
+	$(eval RESTMP := $(shell mktemp -d /tmp/cocos-emscripten.XXXXXX))
+	# Always need a font path, so ensure that it is created first.
+	mkdir -p $(RESTMP)/fonts
+	(cd $(RESOURCE_PATH) && cp -a $(RESOURCES) $(RESTMP))
+	(cd $(FONT_PATH) && cp -a * $(RESTMP)/fonts)
+	# NOTE: we copy the system arial.ttf so that there is always a fallback.
+	cp /Library/Fonts/Arial.ttf $(RESTMP)/fonts/arial.ttf
+	(cd $(RESTMP); python $(PACKAGER) $(EXECUTABLE).data $(patsubst %,--preload %,$(RESOURCES)) --preload fonts --pre-run > $(EXECUTABLE).data.js)
+	mv $(RESTMP)/$(EXECUTABLE).data $@
+	mv $(RESTMP)/$(EXECUTABLE).data.js $@.js
+	rm -rf $(RESTMP)
 
 $(BIN_DIR)/index.html: index.html
 	@mkdir -p $(@D)