PHP fails to compile, LC_CTYPE undeclared

I am sure there is an easy answer to this. PHP fails to compile with LC_TYPE undeclared.

I pretty much built everything with the defaults except:
i586
gettext/locale/
large files
wchar
php

I built buildroot successfully prior to without php. So I am assuming that LC_CTYPE is hiding in a package or toolchain somewhere. What do I need to turn on?

Thanks in advance.