竹炉山房

yum install scim-piny

Increate a symbolic link to /etc/X11/xinit/xinput.d/scim with name as xinput-YOURLOCALE under /etc/alternatives, e.g. xinput-en_US

Add scim -d to any of your startup script, e.g. xsession, .bashrc, .bash_profile

Restart x server, and you are set.