Why can't CLion find the function?

Question

OpenGL

Good day to all! Started learning OpenGL and immediately ran into a problem!
I included the library, but when compiling, it says " undefined reference to `glGetString' ". I don't know what the problem is, if anyone knows, please explain what is wrong?

PS: using Linux + IDE CLion

Answer 1

You have included only the header file. You have an error at the linking stage, because opengl libraries are not linked.
You need to connect the module https://cmake.org/cmake/help/v3.0/module/FindOpenG...