Makefile 一次编译多个独立cpp文件

- src/
    - headers/
        - *.h
    - *.cpp
    - makefile

# makefile

CC = g++
CPPFLAG = -Wall -g -std=c++11

TARGET = $(patsubst %.cpp, %.out, $(wildcard *.cpp))
HEADER = $(wildcard headers/*.h)

%.out : %.cpp $(HEADER)
    $(CC) $(CPPFLAG) $< -o $@

.PHONY : all clean

all : $(TARGET)

clean : 
    rm -f *.out