一个比较通用的Makefile

TARGET = xxx

SRCDIRS = .
SRCEXTS := .c .cpp
SRC = $(foreach d,$(SRCDIRS),$(wildcard $(addprefix $(d)/*,$(SRCEXTS))))
OBJ = $(foreach x,$(SRCEXTS), $(patsubst %$(x),%.o,$(filter %$(x),$(SRC))))

CFLAGS += -Wall -g
           -I../libjson/include/
           -I../mylib

CPPFLAGS += $(CFLAGS)
CXXFLAGS += $(CFLAGS)

LDLIBS += -lm
       ../libjson/lib/$(CROSS)/libjson.a
       ../netzip_build/lib/libz.a

$(TARGET): $(OBJ)
   $(CXX) -o $(TARGET) $(OBJ) $(CFLAGS) $(CPPFLAGS) $(LDFLAGS)   $(LDLIBS)

%.o: %.c
   $(CC) -c $(CPPFLAGS) $(CFLAGS) $< -o $@

%.o: %.cpp
   $(CXX) -c $(CPPFLAGS) $(CXXFLAGS) $< -o $@

%.d: %.c
   @set -e; rm -f $@;
   $(CC) -MM $(CFLAGS) $< > $@.$$$$;
   sed 's,($*).o[ :]*,1.o $@ : ,g' < $@.$$$$ > $@;
   rm -f $@.$$$$

%.d: %.cpp
   @set -e; rm -f $@;
   $(CXX) -MM $(CPPFLAGS) $< > $@.$$$$;
   sed 's,($*).o[ :]*,1.o $@ : ,g' < $@.$$$$ > $@;
   rm -f $@.$$$$

include $(OBJ:.o=.d)

install:
   cp $(TARGET) /srv/nfs

clean:
   rm -f $(TARGET)
   rm -f $(OBJ)