Question

I was doing some OpenGL programming in C++.

This is part of my code:

#include <time.h>
#include <windows.h>
#include <gl/gl.h>
#include <gl/glu.h>
#include <gl/glut.h> <<< Error here "Cannot open source file gl/glut.h"

How can I fix this?

EDIT: I am using Microsoft Visual C++ Express Edition. Sorry forgot to mention it

Answer 1

You probably haven’t installed GLUT:

1. Install GLUT
   If you do not have GLUT installed on your machine you can download it from:
   http://www.xmission.com/~nate/glut/glut-3.7.6-bin.zip (or whatever version)
   GLUT Libraries and header files are
   • glut32.lib
   • glut.h

Source: http://cacs.usc.edu/education/cs596/OGL_Setup.pdf

EDIT:

The quickest way is to download the latest header, and compiled DLLs for it, place it in your system32 folder or reference it in your project. Version 3.7 (latest as of this post) is here:
http://www.opengl.org/resources/libraries/glut/glutdlls37beta.zip

Folder references:

glut.h: 'C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\include\GL\'
glut32.lib: 'C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\lib\'
glut32.dll: 'C:\Windows\System32\'

For 64-bit machines, you will want to do this.
glut32.dll: 'C:\Windows\SysWOW64\'

Same pattern applies to freeglut and GLEW files with the header files in the GL folder, lib in the lib folder, and dll in the System32 (and SysWOW64) folder.
1. Under Visual C++, select Empty Project.
2. Go to Project -> Properties. Select Linker -> Input then add the following to the Additional Dependencies field:
opengl32.lib
glu32.lib
glut32.lib

Reprinted from here