Makefile学习(二)[第二版]

复杂实例

#示例1:在上一个示例的基础上再增加一个可执行文件03test[修改之处已标红]

.PHONY: clean all

CC = gcc

CFLAGS = -Wall -g

BIN = 01test 02test 03test

SOURCES = $(BIN:=.c)

OBJECTS = $(BIN:=.o)

all: $(BIN)

01test: 01test.o

02test: 02test.o

03test: 03test.o

.c.o:

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

clean:

-rm -rf $(BIN) $(OBJECTS)

#示例2:在示例1上为03test添加一个自编的头文件pub.h[修改之处已标红]

.PHONY: clean all

CC = gcc

CFLAGS = -Wall -g

BIN = 01test 02test 03test

SOURCES = $(BIN:=.c)

OBJECTS = $(BIN:=.o)

all: $(BIN)

01test: 01test.o

02test: 02test.o

03test: 03test.o pub.o

.c.o:

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

clean:

-rm -rf $(BIN) $(OBJECTS)

一个比较复杂的综合示例

//1 pub.cpp
int pub(int a,char *ch,int b)
{
    char c = ch[0];
    switch(c)
    {
        case '+':
            return a+b;
            break;
        case '-':
            return a-b;
            break;
        case '*':
            return a*b;
            break;
        case '/':
            if (b != 0)
            {   
                return a/b;
            }   
            else
            {   
                return -1;
            }
            break;
        default:
            return -1;
            break;
    }

    return 0;
}

//2 pub.h
int pub(int a,char *ch,int b);

//3 main.cpp
#include <iostream>
#include <stdlib.h>
#include "pub.h"
using namespace std;

int main(int argc,char *argv[])
{
    if (argc < 4)
    {   
        cerr << "error" << endl;
        return -1; 
    }   

    cout << argv[1] << ' ' << argv[2] << ' ' << argv[3] << " = " 
         << pub(atoi(argv[1]),argv[2],atoi(argv[3])) << endl;

    return 0;
}

#4 Mackfile

.SUFFIXES:.cpp .o

CC=g++

SOURCE=main.cpp pub.cpp

OBJC=$(SOURCE:.cpp=.o) #将.cpp文件全部替换为.o文件

EXEC=mytest

all:$(OBJC)

$(CC) -o $(EXEC) $(OBJC)

.cpp.o:

$(CC) -o $@ -c $<

clean:

rm -rf $(OBJC)

附-如果一条语句在执行Mackfile文件时，不想打印出来，则在其前面加上@符号

比较专业的Makefile编写

#示例1

all: myapp

# Which compiler

CC = g++

# Where are include files kept

INCLUDE = .

# Options for development

FLAGS = -g -Wall -ansi

# Options for release

# CFLAGS = -O -Wall -ansi

.SUFFIXES:.cpp .o

SOURCE = main.cpp pub.cpp

OBJC = $(SOURCE:.cpp=.o)

EXEC = myapp

$(EXEC): ${OBJC}

$(CC) -o $(EXEC) $(OBJC)

.cpp.o:

$(CC) -o $@ -I$(INCLUDE) $(FLAGS) -c $<

clean:

rm -rf $(OBJC) $(EXEC)

#示例2-添加了install选项

all: myapp

# Which compiler

CC = g++

# Where to install

INSTDIR = /usr/local/bin/

# Where are inlude files kept

INCLUDE = .

# Options for development

CFLAGS = -g -Wall -ansi

# Options for release

# CFLAGS = -O -Wall -ansi

.SUFFIXES: .cpp .o

SOURCE = main.cpp pub.cpp

OBJECT = $(SOURCE:.cpp=.o)

EXEC = myapp

$(EXEC): $(OBJECT)

$(CC) -o $(EXEC) $(OBJECT)

.cpp.o:

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

clean:

-rm -rf $(OBJECT)

install: $(EXEC)

@if [ -d $(INSTDIR) ] ; then

cp $(EXEC) $(INSTDIR) ;

chmod a+x $(INSTDIR)/$(EXEC) ;

chmod og-w $(INSTDIR)/$(EXEC) ;

echo "Installed in $(INSTDIR)" ;

else

echo "Sory, $(INSTDIR) does not exist." ;