Here is output of $emerge hfsutils
>>> Compiling source in /var/tmp/portage/hfsutils-3.2.6-r5/work/hfsutils-3.2.6 ...
./configure --prefix=/usr --host=i686-pc-linux-gnu --mandir=/usr/share/man
--infodir=/usr/share/info --datadir=/usr/share --sysconfdir=/etc
--localstatedir=/var/lib --without-tcl --with-tk --build=i686-pc-linux-gnu
creating cache ./config.cache
configure: error: --with-tk requires --with-tcl
and here is output of $emerge -pv hfsutils
[ebuild R ] sys-fs/hfsutils-3.2.6-r5 USE="tk* -tcl" 0 kB