Install g++ on Windows

使用`cygwin`

使用`Mingw`

使用`Babun`

安装
```
pact install gcc-g++
```

卸载

pact remove gcc-g++
pact remove gcc-core

安装成功后试运行

创建文件hello.cpp

#include <iostream>
using namespace std;
int main()
{
    cout<<"Hello,World!\n"<<endl;
    cin.get();
    return 0;
}

编译

g++ hello.cpp -o Hi

报错

fatal error: stddef.h: No such file or directory compilation terminated.

原因 gcc-core和gcc-g++版本不统一

解决运行pact update gcc-core gcc-g++

参考 Compiling using g++ #191 Compilation error: “stddef.h: No such file or directory”

重新运行，成功。获得文件Hi.exe

运行Hi.exe

./Hi.exe

得到结果

Hello,World!

使用C++11编译

g++ -std=c++11 hello.cpp -o Hi

报错

In file included from /usr/lib/gcc/i686-pc-cygwin/5.4.0/include/c++/ext/string_conversions.h:41:0,
                 from /usr/lib/gcc/i686-pc-cygwin/5.4.0/include/c++/bits/basic_string.h:5249,
                 from /usr/lib/gcc/i686-pc-cygwin/5.4.0/include/c++/string:52,
                 from /usr/lib/gcc/i686-pc-cygwin/5.4.0/include/c++/bits/locale_classes.h:40,
                 from /usr/lib/gcc/i686-pc-cygwin/5.4.0/include/c++/bits/ios_base.h:41,
                 from /usr/lib/gcc/i686-pc-cygwin/5.4.0/include/c++/ios:42,
                 from /usr/lib/gcc/i686-pc-cygwin/5.4.0/include/c++/ostream:38,
                 from /usr/lib/gcc/i686-pc-cygwin/5.4.0/include/c++/iostream:39,
                 from hello.cpp:1:
/usr/lib/gcc/i686-pc-cygwin/5.4.0/include/c++/cstdlib:126:11: error: ‘::at_quick_exit’ has not been declared
   using ::at_quick_exit;
           ^
/usr/lib/gcc/i686-pc-cygwin/5.4.0/include/c++/cstdlib:149:11: error: ‘::quick_exit’ has not been declared
   using ::quick_exit;
           ^

原因不明，各种pact update无效。之后重新安装babun依然是同样的问题可以参考这篇帖子

解决

下载cygwin安装程序，使用其安装gcc package依然无效

最后通过安装gcc --version 5.3.0解决问题，估计是g++版本的问题

{ ~ }  » g++ --version
g++ (GCC) 5.3.0
Copyright (C) 2015 Free Software Foundation, Inc.
This is free software; see the source for copying conditions.  There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

{ ~ }  » gcc --version
gcc (GCC) 5.3.0
Copyright (C) 2015 Free Software Foundation, Inc.
This is free software; see the source for copying conditions.  There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

总结 gcc --version 5.4.0可能有些问题，使用之前的版本就可以了可以通过cygwin安装程序安装旧版本，babun的pact似乎无法回溯到旧版本

后记

安装g++几天后发现g++自动升级了

{ ~ }  » g++ --version                                                           ~
g++ (GCC) 5.4.0
Copyright (C) 2015 Free Software Foundation, Inc.
This is free software; see the source for copying conditions.  There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

但是一切编译都正常。我凌乱了

4.9.2 5.4.0

使用cygwin

使用Mingw

使用Babun

安装成功后试运行

后记

使用`cygwin`

使用`Mingw`

使用`Babun`