Error: unable to open include file: ‘GL / glut. H’

Today, someone else’s source program appeared such a problem, the first thought is the lack of files, really after viewing the lack of some toolkits, in this solution is offered, for your reference:
1. Download the GLUT Toolkit. https://download.csdn.net/download/xianhua7877/10473663
2, will download the package, Will get five documents, including GlU32. Lib glut32. DLL glut32. Lib glut. DLL glut. H glut. Lib
3, let the glut of decompression. H into the C:/Program Files/Microsoft Visual Studio 9.0/VC/include the folder.
4. Put the Glut. lib and Glut32.lib Files in the C:/Program Files/Microsoft Visual Studio 9.0/VC/lib folder where the static function libraries are located.
5. Put the extracted Glut. DLL and Glut32.dll in the system32 folder under the operating system directory.
6. This step is very important, this step is very important, this step is very important, run again, if the error is still, then change the header file’s original name #include <; GL/glut.h> For the # include & lt; glut.h> .

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