Hi,
I have installed the ADSP-SC583W SOM board support package and have opened a fresh installation of CCES version 3.0.3.
I have opened the Power_On_Self_Test_SC835_SHARCFX project from the 'Browse Examples' menu.
Select the project from the project explorer and build the project.
Result: 
It appears the adi_xspi library is not correctly setup for the POST build.
How can I resolve this issue?