[Libreoffice] configure: WARNING: Your gcc is not -fvisibility=hidden safe. Disabling visibility

Hello,

I'm running on Mac OSX 10.6.6 and getting this warning with ./autogen.sh --with-num-cpus=2 
--with-max-jobs=2 --disable-mozilla --disable-systray 'CC=ccache gcc-4.0' 'CXX=ccache g++-4.0'

...
checking if STL headers are visibility safe... yes
checking if gcc is -fvisibility-inlines-hidden safe with STL headers... yes
checking if gcc has a visibility bug with class-level attributes (GCC bug 26905)... yes
configure: WARNING: Your gcc is not -fvisibility=hidden safe. Disabling visibility
...
****************************************************************************
*
* LibreOffice configuration finished. 
*
* - Your gcc is not -fvisibility=hidden safe. Disabling visibility
*
**************************************************************************** 

Congratulations to everyone on releasing 3.3 today!

--Dave