一个简单makefile(指定obj文件位置)

1. 可以指定 .o 文件生成的位置

2. 可以自动搜索原代码文件

 

用于例子的目录和文件结构大致如下:

app

    src

        obj

            test.o

            a.o

        a.cpp

        test.cpp

        makefile

    include

    bin

 

#make file v1.0

#define charset

export LC_ALL  = zh_CN.GBK

export LANG    = zh_CN.GBK

#define gcc global variable

LIBS = -lpthread -lrt

INCLUDE = -I../

CC = g++

CFLAGS += -Wno-deprecated -Wall -g

#define target file

BIN = ../bin/test

#define compile variable

CUR_PATH = ./

OBJ_PATH = $(CUR_PATH)obj/

#获取到本目录下所有cpp

ALL_CPP = $(foreach dir,$(CUR_PATH),$(wildcard $(dir)*.cpp))

#构造预期的目标 .o 文件

ALL_OBJ = $(patsubst $(CUR_PATH)%.cpp,%.o,$(ALL_CPP))

#指定 .o 文件生成的目录

ALL_OBJ_POS = $(addprefix $(OBJ_PATH),$(ALL_OBJ))

#define target

default:

        @echo "make file example v1.0"

        @echo " use make all"

        @echo $(DEPE)

all: $(ALL_OBJ)

#.PHONY : all

        $(CC) $(LIBS) $(CFLAGS) -o $(BIN) $(ALL_OBJ_POS)

$(ALL_OBJ): %.o: %.cpp

        $(CC) $(INCLUDE) $(CFLAGS) -c $< -o $(OBJ_PATH)$@

clean :

        -rm $(OBJ_PATH)*.o $(BIN) *.o