win10 解决“ 'g++' 不是内部或外部命令,也不是可运行的程序或批处理文件”的问题

本文详细介绍了如何在Windows环境下解决'g++'命令未被识别的问题,通过下载并安装MinGW,以及正确配置环境变量,最终实现使用g++顺利编译C++程序的目标。

问题描述

想要用g++在windows下运行C++程序(.cpp文件),但是出现 'g++' 不是内部或外部命令,也不是可运行的程序或批处理文件 的问题。

解决方案

需要安装MinGW并且配置环境变量才行。

1. 在如下网址下载MinGW

https://sourceforge.net/projects/mingw/

下载之后是一个名为mingw-get-setup.exe的文件,双击安装。

2. 安装MinGW

将MinGW安装在D:\mingw文件夹下(可自由选择,这里为之后添加环境变量作为范例)
安装好后选择需要下载的安装包,选择All packets->MinGW->MinGW Base System->MinGW Compiler Suite;
在右边框选择Description栏目下与The GNU C++ Compiler相关的4个安装包,选择菜单栏Installation->apply changes;待安装完成后点击close。
此时,在安装目录D:\mingw下有下列文件夹:

 

MinGW安装目录下的文件示意

3. 添加环境变量

我的电脑->属性->高级系统设置->环境变量->系统变量

  1. 系统变量->Path->编辑->新建->D:\mingw\bin->确定
  2. 系统变量->新建->变量名:LIBRARY_path->变量值:D:\mingw\lib->确定
  3. 系统变量->新建->变量名:C_INCLUDE_PATH->变量值:D:\mingw\include->确定

4.检测g++是否可以正常运行

在cmd输入g++ -v,若正常运行则完成。
若仍出现 'g++' 不是内部或外部命令,也不是可运行的程序或批处理文件 的问题,则按照下面方法处理:
打开cmd

 

> D:
> cd mingw\bin
> mingw-get install gcc g++

命令.png

 

待安装成功后,输入g++ -v,若出现以下界面,则表示可以正常使用。

 

成功啦



作者:cca1yy
链接:https://www.jianshu.com/p/9bffbaf12bed
来源:简书
著作权归作者所有。商业转载请联系作者获得授权,非商业转载请注明出处。

Installing c++/g++ on Windows Disclaimer: This page is being maintained mainly for my students. Use these instructions at your own risk. There is no warranty in any form or shape whatsoever!. There is no guarantee that these instructions are up-to-date. With that understood you may continue with the rest of this page if you choose to accept these terms. This page was last updated on September 13, 2005, but still good as of April 30, 2009. Follow these steps to install g++ (the GNU C++ compiler) for Windows. There is no room for creativity here; you must follow the directions exactly. Pick the drive and a folder in which you want to install g++. I'll assume that it is C:, but you can choose a different one. If you choose a different drive or a different folder, you'll need to adapt the directions below accordingly. Download full.exe, an about 14 megabyte executable, to C:\full.exe by right-clicking on the link. Use Save Link As... or Save Target As... Be sure the browser saves the file as C:\full.exe. Run the downloaded executable. This will install g++ (and a lot of other things that you don't really need) on your hard drive. Go to the C: drive using Windows Explorer and double-click on full.exe. Or, open a DOS window (Start > Programs > Command Prompt), connect to the C: drive using the cd command, and type full. Locate where the bin folder was created for the g++ installation. On my Windows XP machine, it was created in the following path: C:\cygnus\cygwin-b20\H-i586-cygwin32\bin You now should add it to the PATH environment variable. You do that by following: Start -> Control Panel -> System -> Advanced -> Environment Variables At this point you can see the PATH variable either in the User Variables or in the System Variables. Add the g++ path into the PATH variable. You add it to the end of the existing value separated by a semicolon (';'). Make sure that you do not lose the original value. You are just appending more to the end separated by a semicolon. Restart your computer. A Cygnus Solutions entry will appear in your Programs menu, and an icon may appear on your desktop. Don't use them! You will use it using the g++ command on a DOS prompt as explained below. You should now be able to run g++ from a DOS (Command Prompt) window. For example, to compile a file called C:\mine\hello.cpp, connect to the C:\mine folder and enter g++ -g hello.cpp -o hello -lm You'll then be able to run the compiled program by entering hello in the DOS window. If you've installed Emacs as described here, you will also be able to run g++ from Emacs. If, when you do this, Emacs tries to compile with the command make -k, you made a mistake during the Emacs installation. If you want to learn how to run g++ on emacs, see here. If you'd like to learn more about where this free compiler came from, we downloaded it from an older site of http://sourceware.org/cygwin/. If you wish to clean up a little, you may delete the file: full.exe at this point. Your g++ compiler is installed under C:\cygnus.
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