Help : problem with cmiling gtk+-1.2.10 on Linux mandrake 7.2

[sian <chi sian wanadoo fr>]

Hello,

I tried to solve my problem for 2 weeks but I have no clue of 
what is happening. So I explain you my problem:


I have in my system gtk+-1.2.8 but no gtk-config, so 
I want to install gtk+-1.2.10.

I succeed in compiling glib but not gtk+-1.2.10.

When I type ./configure --x-librairies=/usr/X11R6/lib 
--x-include=/usr/X11R6/include

I have the following message error:

-> missing libX11

But when I try: 

$ locate libX11  

-> /usr/X11R6/lib/libX11.so.6
->/usr/X11R6/lib/libX11.so.6.1   

I do not understand...

Do someone has a clue ?

Thank you very much.

Si-An