Module uinput not found

# modprobe uinput
WARNING: All config files need .conf: /etc/modprobe.d/alsa-base, it will be ignored in a  future release.
FATAL: Module uinput not found.

Cause: uinput module is not compiled into the kernel

If compiled with the kernel you should get...

# cat /etc/kernel/kernel-config-x86_64-3.1.6-gentoo|grep UINPUT
 CONFIG_INPUT_UINPUT=y

if not you get...

 # CONFIG_INPUT_UINPUT is not set