Install issues with Centos 6

[JC Putter]

Hi

make produces the following error

./defs.h:22:24: error: tre/tre.h: No such file or directory

tre.i686
         0.7.6-2.el6
             epel
tre-devel.i686
         0.7.6-2.el6
             epel

I have the tre packages installed.

Any help will be appreciated. Thanks