SFML Core Profile is not compiling GLSL 330

[Alpha-Phoenix]

Hello Everyone! I'm trying to use GLSL 330 core with SFML but I don't know what's going on!
Here is my code:

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#include <iostream>
#include <SFML/Graphics.hpp>
#include <SFML/OpenGL.hpp>

int main()
{
    sf::ContextSettings settings;
    settings.majorVersion = 3;
    settings.minorVersion = 3;
    settings.attributeFlags = sf::ContextSettings::Core;
    sf::Window window(sf::VideoMode(800, 600), "Helicopter Simulator", sf::Style::Default, settings);

    if (!sf::Shader::isAvailable())
    {
        std::cerr << "Shaders are unavailable" << std::endl;
    }

    std::cout << "SFML Using OpenGL: " << window.getSettings().majorVersion << "." << window.getSettings().minorVersion << std::endl;

    std::cout << "OpenGL Version: " << glGetString(GL_VERSION) << std::endl;

    std::cout << "GLSL Version: " << glGetString(GL_SHADING_LANGUAGE_VERSION) << std::endl;

    sf::Shader cubeShader;

    if(!cubeShader.loadFromFile("Shaders/cube.vert", "Shaders/cube.frag"))
    {
        std::cerr << "ERROR: Failed to load shader" << std::endl;
    }

    while (window.isOpen())
    {
        sf::Event event;
        while (window.pollEvent(event))
        {
            if (event.type == sf::Event::Closed)
                window.close();
        }
        glClearColor(0.5f, 0.5f, 0.5f, 1.0f);
        glClear(GL_COLOR_BUFFER_BIT);
        window.display();
    }

    return 0;
}
 

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#version 330 core

layout (location = 0) in vec2 position;

void main()
{
    gl_Position = vec4(position, 0.0f, 1.0f);
}
 

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#version 330 core

out vec4 FragColor;

void main()
{
    FragColor = vec4(1.0);
}
 

Output:

SFML Using OpenGL: 3.3
OpenGL Version: 3.0 Mesa 17.0.7
GLSL Version: 1.30
Failed to compile vertex shader:
0:1(10): error: GLSL 3.30 is not supported. Supported versions are: 1.10, 1.20, 1.30, 1.00 ES, and 3.00 ES

ERROR: Failed to load shader

GLX:

glxinfo | grep OpenGL
OpenGL vendor string: Intel Open Source Technology Center
OpenGL renderer string: Mesa DRI Intel(R) Ivybridge Mobile
OpenGL core profile version string: 3.3 (Core Profile) Mesa 17.0.7
OpenGL core profile shading language version string: 3.30
OpenGL core profile context flags: (none)
OpenGL core profile profile mask: core profile
OpenGL core profile extensions:
OpenGL version string: 3.0 Mesa 17.0.7
OpenGL shading language version string: 1.30
OpenGL context flags: (none)
OpenGL extensions:
OpenGL ES profile version string: OpenGL ES 3.0 Mesa 17.0.7
OpenGL ES profile shading language version string: OpenGL ES GLSL ES 3.00
OpenGL ES profile extensions:
 

Por que o SFML produz GLSL versão 1.30 e GLX 3.30?
Please help me!!! 

[binary1248]

If you really want to use OpenGL 3.3 core on your system some steps are necessary:

• Don't use anything in sfml-graphics, this includes sf::Shader. sfml-graphics contexts are by default always compatibility. You will have to do everything yourself in raw OpenGL.
• On your system you have to make sure that you are not using any compatibility contexts. This means no sfml-graphics and explicitly having to activate the context of your window after creation.
• Always make sure that your window is activated after you create it. If you don't explicitly do this you might end up using a context you didn't create, which is not going to be 3.3 core.