[Help-glpk] option --orig --wlpt does not work?

[hstahlke]

Hi 
 
I just compiled glpk 4.6. 
Trying 
glpsol --check -m model.mod -d mc01.data --orig --wlpt model.lp 
writes a nice CPLEX file, but there are no names except for the objective 
function. Everything is named x(<number>) or r(<number>): for the 
constraints. 
I guess I missed something, so what else do I have to do (apart from 
writing --orig to the comandline)? 
Thanks in advance for your help. 
Henning