Problem to compil the CVS version with GTK 1.2.6

[Axel Rousseau]

The Error :
--> configure: error: Test for GTK failed. See the file 'INSTALL' for
help

It need the 1.2.1 GTK version

But when i looking for my version, i've got :

[root@axel gimp]# gtk-config --version
1.2.6

1.2.6 is higher than 1.2.1, isn't it ? 

before I put the 1.2.6 version from GTK, it worked nicely

Who can help me ?

Axel