sof file is not generated

Hello all,

I am getting my compilation done but sof file is not generated and assembler shows this message.

Info: Command: quartus_asm --read_settings_files=off --write_settings_files=off dcb_top -c dcb_top

Info (115015): Compilation Report contains advance information. Specifications for device 5CEFA7F31C7 are subject to change. Contact Altera for information on availability. No programming file will be generated.

So, how to track this issue.Any help will be appreciated.

Thanks.