Strange Message

This is a multi-part message in MIME format.

Hi,

 

I have just started rebuilding my target again but there is a strange message when building every package. A snapshot of  output is :-

 

->Compiler Cache enabled: 0.00% cache hits so far.

pkgprefix: package libx11 is not present

pkgprefix: package libx11 is not present

pkgprefix: package libx11 is not present

pkgprefix: package libx11 is not present

->Reading package config: package/…

 

Any ideas why this message has started appearing? I think it started today.

 

Thanks

 

Adam