[Libreoffice] warning about ccache in configure.log

[Regina Henschel]

Hi all,

I'm try to find out, what parameter to autogen.sh are really needed for 
a build with Cygwin and Visual Studio Express. So I start with a pure 
./autogen.sh

I get the warning
configure:6733: WARNING: ccache's cache size is less than 1GB using it 
is counter-producive: Disabling auto-ccache detection

What does it mean? Is there some setting I have missed?

Kind regards
Regina