sudo emerge -pv synce

These are the packages that would be merged, in order:

Calculating dependencies... done!
[ebuild  N    ] app-pda/synce-libsynce-0.9.2  0 kB 
[ebuild  N    ] app-pda/synce-serial-0.9.1  0 kB 
[ebuild  N    ] app-pda/synce-librapi2-0.9.2  0 kB 
[ebuild  N    ] app-pda/synce-dccm-0.9.1  0 kB 
[ebuild  N    ] app-pda/synce-0.9.2  USE="-gnome -kde"