[newbie] mandrake 7 and mesa

[Bin Yang]

Hi, I got problem when I upgrade my 6.1 to the latest 7.0.
I am working on an image manipulation project, so I need
openGL. I installed MESA3.1beta on my mandrake 6.1 and it worked
fine.
 After I upgraded my system to mandrake 7.0, I can not compiled
my old program, the error message is from ld!
It can not find the libGL and libGLU, but the lib is there!
 Anybody know what i should do to make ld know the new addess of
the lib?