format_ogg_vorbis is XXX'ed out

I’m attempting to include format_ogg_vorbis in make menuselect, but the format_ogg_vorbis option is XXX’ed out.

I didn’t think i had libogg and libvorbis, but it turns out i have:

Package 1:libvorbis-1.2.3-4.el6_2.1.x86_64 already installed and latest version Package 2:libogg-1.1.4-2.1.el6.x86_64 already installed and latest version

However the menuselect isn’t picking these up.

Do i need to install from source? or is there something else i need to do?

I’m on CentOS 6, installing Asterisk 11

Typically you require the development packages, which include the .h files.