error: Unexpected use of HDL library function(s) (possibly due to taking the address of the function)!

Description

You may see this error message when the Intel® FPGA SDK for OpenCL™ compiler executes an EFI(Extensible Firmware Interface) function which is equivalent to its OpenCL funtion

Resolution

This problem is fixed beginning with the Intel FPGA SDK for OpenCL compiler software version 18.1.