Makefile學習(二)[第二版]

復雜實例

#示例1:在上一個示例的基礎上再增加一個可執行文件03test[修改之處已標紅]

.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上為03test添加一個自編的頭文件pub.h[修改之處已標紅]

.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)

?

一個比較復雜的綜合示例

//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) #將.cpp文件全部替換為.o文件

EXEC=mytest

?

all:$(OBJC)

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

?

.cpp.o:

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

?

clean:

rm?-rf?$(OBJC)

附-如果一條語句在執行Mackfile文件時，不想打印出來，則在其前面加上@符號

?

比較專業的Makefile編寫

#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選項

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."?;?\

????fi