头文件:A.h
void test();
源文件:A.cpp
#include <iostream>
#include<thread>
#include<chrono>
#include<clocale>
#include "boost/date_time/gregorian/gregorian.hpp"
#include "boost/date_time/posix_time/posix_time.hpp"
using namespace std;
using namespace boost;
using namespace boost::gregorian;
using namespace boost::posix_time;
void test()
{
date d = day_clock::local_day();
date_facet* dfacet = new date_facet("%Y年%m月%d日");
cout.imbue(locale(cout.getloc(), dfacet));
cout << d << endl;
ptime tp = microsec_clock::local_time();
time_facet* tfacet = new time_facet("%Y年%m月%d日%H点%M分%S%F秒");
cout.imbue(locale(cout.getloc(), tfacet));
cout << tp << endl;
}
main函数所在文件:test.cpp
#include "A.h"
int main()
{
test();
return 0;
}
手动编译:
一步编译:
g++ -o test.o A.cpp test.cpp -std=c++11
分开编译:
g++ -c A.cpp -std=c++11
g++ -c test.cpp
g++ A.o test.o -o test.out
运行:./test.out
采用makefile编译:
test:A.o test.o
g++ -o test A.o test.o
test.o:A.h test.cpp
g++ -c test.cpp
A.o:A.cpp
g++ -c A.cpp -std=c++11
clean:
rm test A.o test.o
引入变量:
objects=A.o test.o
test:$(objects)
g++ -o test $(objects)
test.o:A.h test.cpp
g++ -c test.cpp
A.o:A.cpp
g++ -c A.cpp -std=c++11
clean:
rm test $(objects)
自动推导:
objects=A.o test.o
test:$(objects)
g++ -o test $(objects)
test.o:A.h //省略编译命令和test.cpp
A.o:A.cpp
g++ -c A.cpp -std=c++11 //因为要使用c++11编译,所以显示给出,这两句。否则,和上一行可以省略
clean:
rm test $(objects)
1.附加库在链接阶段
2.不属于项目的头文件,如果没在默认寻找目录中,使用 -L指定,在依赖中不用写
3.使用mysql的库要apt-get install libmysql++-dev
objects=main.o parsexml.o tinyxml2.o opfile.o opmysql.o stringex.o pathx.o timex.o
logtoo_srvd_bin=../build/bin
logtoo_srvd:$(objects)
g++ -o $(logtoo_srvd_bin)/logtoo_srvd $(objects) -L /usr/local/lib -lmysqlclient
rm $(objects)
main.o:parsexml.h opmysql.h opfile.h stringex.h timex.h pathx.h main.cpp
g++ -c main.cpp -I /usr/local/include -std=c++11
parsexml.o:tinyxml2.h parsexml.cpp
g++ -c parsexml.cpp -std=c++11
tinyxml2.o:
opfile.o:stringex.h timex.h opfile.cpp
g++ -c opfile.cpp -std=c++11
opmysql.o:opmysql.cpp
g++ -c opmysql.cpp -I /usr/local/include -std=c++11
stringex.o:stringex.cpp
g++ -c stringex.cpp -std=c++11
pathx.o:pathx.cpp
g++ -c pathx.cpp -std=c++11
timex.o:
clean:
rm $(logtoo_srvd_bin)/logtoo_srvd