how to fix this as: unrecognized option '-mmcu=avr5'

Development Tools IDE 1.x
1

i downloaded and intall an arduino ide in ubuntu 12.10 and when i try the example blink the ide give me this error "as: unrecognized option '-mmcu=avr5'" anyway i have arduino uno

2

I've stucked same problem , but I found solution in this page ,and could fix.

・[SOLVED] Unable to compile anything, AS: Invalid Argument - #5 by pert - Installation & Troubleshooting - Arduino Forum