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IWRL6432: MMWAVE_L_SDK_05_04_00_01

Part Number: IWRL6432
Other Parts Discussed in Thread: SYSCONFIG

Tool/software:

When I use the This SDK   MMWAVE_L_SDK_05_04_00_01  and try to include i2c driver in my implementation 

There is an error during the build 

when i search on MMWAVE_L_SDK_05_04_00_01 SDK i found that , 

extern I2C_Config gI2cConfig[];
extern uint32_t gI2cConfigNum
 
they are defined as an extern here and don't have any definition before, this is the first time to be mentioned, and it also used to be checked in multiple APIs.
why they aren't defined before and if i want to define what is the initial values for each of them.