[Webkit-unassigned] [Bug 102687] [EFL] GLX detection is broken.

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=102687





--- Comment #8 from Raphael Kubo da Costa (rakuco) <rakuco at webkit.org>  2012-11-20 13:13:23 PST ---
(In reply to comment #5)
> > Doesn't this boil down to just detecting whether mesa is present? I thought we already did that with FIND_PACKAGE(OpenGL).
>
> This assumption would be wrong on some platforms i.e wayland.

(In reply to comment #6)
> > That's true, you could use FIND_PACKAGE(OpenGL) + check if OPENGL_XMESA_FOUND is set.
>
> I was hoping we could do this. But the problem seems to be as follows:
>
> 1)In FindOpenGL.cmake OPENGL_XMESA_FOUND is set to True if OPENGL_xmesa_INCLUDE_DIR is True
>
>     FIND_PATH(OPENGL_xmesa_INCLUDE_DIR GL/xmesa.h
>       /usr/share/doc/NVIDIA_GLX-1.0/include
>       /usr/openwin/share/include
>       /opt/graphics/OpenGL/include /usr/X11R6/include
>     )
>
> Here GL/xmesa.h  seems to be the problem. The "XMesa" interface is deprecated and GL/xmesa*.h files are  no longer considered public.

Could you elaborate on what the right solution that contemplated Wayland and didn't look for xmesa would be (ie. what libraries and headers would it look for)? As good citizens, it'd be nice to fix this upstream in CMake if possible.

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