在单步生成目标时如何预编译头文件?

我有一个简单的makefile,它查找与之相关的cpp文件,并从中构建目标。在构建目标时,我如何修改它以预编译与之相关的头文件?

TARGET ?= application
CXXFLAGS += -Os -I. -MMD -MP -std=c++11    

SOURCES := $(shell find -L . -name '*.cpp')
OBJECTS := $(SOURCES:.cpp=.o)
DEPENDS := $(SOURCES:.cpp=.d)    

$(TARGET): $(OBJECTS) 
    $(CXX) $(OBJECTS) -o $@ $(LDLIBS)    

.PHONY: clean    

clean : 
    $(RM) $(TARGET) $(OBJECTS) $(DEPENDS)    

-include $(DEPENDS)