Undefined symbol "glXBindTexImageEXT"

[Ronald Klop]

Hi maintainer of virtualbox-ose-additions,

After I saw https://svnweb.freebsd.org/ports?view=revision&revision=553175  
to fix compiling with OpenGL support I tried it.

'Simple' X11 application like urxvt work, but more advanced like  
xfce4-terminal or firefox crash very early with:

ld-elf.so.1: /usr/local/lib/VBoxOGL.so: Undefined symbol  
"glXBindTexImageEXT"

What can I help to debug this?

BTW: does it matter if I use vboxvideo from drm-devel-kmod or not? With  
and without it gives the same error.

Regards,
Ronald.