/usr/portage/profiles/base/use.mask says that input_devices_wacom is needed only on x86, amd64 and ppc architectures. While x86 and amd64 profiles unmask input_devices_wacom, the ppc profile does not. Who is wrong? base/use.mask or ppc/use.mask? This bug prevents Qt4 to be built with tablet support on PPC boxes.
Done, i also unmask input synaptics