Mine

                                # If we're in a kde-base ebuild, set the prefixed directories to
                                # override the ones set by econf.
                                if [[ ${PREFIX} != "/usr" ]]; then
                                        myconf="${myconf} --prefix=${PREFIX}
                                                --mandir=${PREFIX}/share/man
                                                --infodir=${PREFIX}/share/info
                                                --datadir=${PREFIX}/share
                                                --sysconfdir=${PREFIX}/etc"
                                fi