[opensuse-factory] How do I use gcc-4.5 and g++-4.5 on opensuse-factory?

I am using opensuse-factory, (indirectly thru opensuse-buildservice) to build a project. What do I have to put on the "./configure" lines and "make" lines to make it use the alternate compiler =gcc-4.5 and g++-4.5? I am asking this here because I do not have thefactory distro and can not cousult the docs. CC=gcc-4.5 CXX=g++-4.5 ./configure #blah blah blah did not work! -- Paul Elliott 1(512)837-1096 pelliott@BlackPatchPanel.com PMB 181, 11900 Metric Blvd Suite J http://www.free.blackpatchpanel.com/pme/ Austin TX 78758-3117