Problem linking OpenGL functions when upgrading to Qt5.5 from 5.2

FrankE · wrote on 16 Sept 2015, 16:15

It fails on linking almost every GL function, being GPUTexture a class I did myself the linker outputs lots of errors like these ones:
GPUtexture.obj:-1: error: LNK2001: unresolved external symbol __imp_glBindTexture
GPUtexture.obj:-1: error: LNK2001: unresolved external symbol __imp_glDeleteTextures
GPUtexture.obj:-1: error: LNK2001: unresolved external symbol __imp_glGenTextures

Of course I've added to my .pro file
QT += core gui opengl websockets

And as I said in 5.2 it was working without any problem, any tip on this?

Regards F.

jsulm · wrote on 17 Sept 2015, 05:22

Is Qt 5.5 built with OpenGL support?

JKSH · wrote on 19 Sept 2015, 04:54

Hi @FrankE,

How does GPUtexture call OpenGL?

FrankE · wrote on 19 Sept 2015, 09:37

Thank you to everyone finally I've decided to migrate (it was about time!) from the old QtOpenGl support to the newer methods ie QGLFramebufferObject -> QOpenGLFramebufferObject it takes a lot to refactoring but I think it will save time for the future.