Fatal error after linking

[lotnik9o]

I added the library to my ubuntu and I compiled this code:

Code: [Select]

#include <SFML/System.hpp>
#include <iostream>
 
int main()
{
    sf::Clock Clock;
    while (Clock.GetElapsedTime() < 5.f)
    {
        std::cout << Clock.GetElapsedTime() << std::endl;
        sf::Sleep(0.5f);
    }
 
    return 0;
}

and everything went well The next code I will compiling is:

Code: [Select]

#include <SFML/Window.hpp>
 
int main()
{
    sf::Window oknoAplikacji( sf::VideoMode( 400, 400, 32 ), "Wprowadzenie" );
    //sf::Window oknoAplikacji;
        //oknoAplikacji.Create( sf::VideoMode( 400, 400, 32 ), "Wprowadzenie", sf::Style::Fullscreen );
 
        while( oknoAplikacji.IsOpened() )
    {
        oknoAplikacji.Display();
    }
    return 0;
}
 

In my terminal I get:

Code: [Select]

lotnik9o@ubuntu:~/Downloads$ g++ -c 1.cpp
In file included from /usr/local/include/SFML/Window.hpp:40:0,
                 from 1.cpp:1:
/usr/local/include/SFML/Window/OpenGL.hpp:47:23: fatal error: GL/gl.h: No such file or directory
compilation terminated.

How can I solve the problem?

[Laurent]

Install the OpenGL development files

[lotnik9o]

Thank you for answer. I solved the problem ( http://ubuntuforums.org/showthread.php?t=1728268 ).