Build in eclipse error after using c files in sdk

[julian]

I can't build in eclipse

see screen here www.dropbox.com/.../Screenshot 2014-03-29 13.33.58.png

My include is setup without problem, if I did not using retarget.c, it builds without problem, and I can debug as well, however after add it, it is complains about smart_uart_config, should I add source file some where?

[Ole Morten]

It seems you haven't included the simple_uart.c file to your build. It is available in Source/simple_uart of the SDK. I suggest you try adding this file, to see if it changes anything.