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CC2340R5: How to add new files or functions in xxx_linkinfo.xml?

Part Number: CC2340R5
Other Parts Discussed in Thread: SYSCONFIG

Tool/software:

Hello friend,
I'm using CC2340R5-Q1 MCU and SDK simplelink_lowpower_f3_sdk_8_10_01_02. I want to print out debug messages. I include Display.h and call the Display_init and Display_open functions. But I get error message as below.

undefined first referenced
symbol in file
--------- ----------------
Display_doInit ./gpiointerrupt.o
Display_doOpen ./gpiointerrupt.o
Display_doPrintf ./gpiointerrupt.o

I checked another project and it has xxx_linkinfo.xml and that file has Display_doInit setting. How to add new files or functions in xxx_linkinfo.xml?
Thank you in advance.
Ted Wu