glGenVertexArrays on the Mac

[SpacedCowboy]

Not sure if this is an SFML thing or not, but on the Mac I needed to alter <SFML/OpenGL.hpp> to read as

#elif defined(SFML_SYSTEM_MACOS)

    #include <OpenGL/gl3.h>
 

... note the 'gl3.h' part, not the original 'gl.h'. Without this, Xcode won't find glGenVertexArrays() it gives instead:

Use of undeclared identifier 'glGenVertexArrays'; did you mean 'glGenVertexArraysAPPLE'?
 

This is using the SFML install from homebrew (2.5.1)


[edit: never mind. I hadn't realized that GLEW was pretty much essential for the extensions etc., and GLEW wants to include <OpenGL/gl.h>, and it's not a good idea to include both...

So, once GLEW is included and init'd, the call to glGenVertexArrays works fine.

I tried to delete this post, but I can't, hence the edit]

[eXpl0it3r]

SFML only exposes the OpenGL symbols that it uses itself.
GLEW is a relatively outdated way to get OpenGL symbols and it's probably better to use something like Glad.