WICED Studio 6.2: Symbol 'errno' 'optarg' 'optind'could not be resolved

Hi ALL:

I'm trying to compiling the '20706-A2_Bluetooth' exampel project for CYBT-343026-EVAL following the guide document（AN223400）using with WICED-Studio-6.2.

But there occurs some errors:

Symbol 'errno' could not be resolved;

Symbol 'optarg' could not be resolved;

Symbol 'optind'could not be resolved;

How to resolve them?

I'm appreciate if someone can help me figure out these. Tks！

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