[GRASS-windows] v.6.4 regex compilation problem

[Robert Szczepanek]

Following Marco's instruction
http://www.webalice.it/marco.pasetti/grass/BuildFromSource.html
I stopped at point 28. GRASS
./configure
with the following error
(...)
checking whether to use regex... yes
checking for location of regex includes...
checking for regex.h... no
configure: error: *** Unable to locate regex includes.

I try to compile version GRASS 6.4 on Windows 2000 according outdated (I know)
Marco's guidelines for GRASS 6.3.

Robert