[CMake] Regex with character '+'

[Xavier Larrode]

Hi all,
 i have a regex like this :
 SET(GTKMM_LIBDIR_EXTRACT_REGEX "[-][l]([a-zA-Z0-9/._-]*)")
And gtmm is using  the lib sigc++-2.0
So i need to add to my regex the character + .
i tried with \+ ; \\+ '+' but nothing work ...
Any idea

Thanks
-------------- next part --------------
A non-text attachment was scrubbed...
Name: Xavier.Larrode.vcf
Type: text/x-vcard
Size: 169 bytes
Desc: not available
Url : http://public.kitware.com/pipermail/cmake/attachments/20060901/06116a3d/Xavier.Larrode.vcf