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Support for Migration VDSP CCES - ADSP21489

Hello I have one important customer that is requiring our support, they have passed the topic:

But still have some errors regarding interrupt handler:

[Error li1021]  The following symbols referenced in processor 'p0' could not be resolved:

        'interrupt [_interrupt]' referenced from '.\lib_sh\SCB\Build\Release\fw_scb_SH5_R.dlb[io_int.doj]'

        'interruptf [_interruptf]' referenced from '.\lib_sh\SCB\Build\Release\fw_scb_SH5_R.dlb[io_int.doj]'

        'interrupts [_interrupts]' referenced from '.\lib_sh\SCB\Build\Release\fw_scb_SH5_R.dlb[io_int.doj]'

They mentioned gone thru the link: FAQ: How do I set up interrupts on SHARC? 

Any advice?