Why does smart compilation fail for my Qsys design? - Why does smart compilation fail for my Qsys design? Description Due to a problem in the Quartus® II software version 12.1sp1, you may see smart compilation fail with following messages in compilation if the project has .qip file and enables the smart compilation option. Info (###): Detected changes in Quartus II Settings File (.qsf). Info (###): Assignment SLD_INFO with value QSYS_NAME test HAS_SOPCINFO 1 GENERATION_ID ### has been deleted. Resolution To work around this problem, use command line for the smart compilation. quartus_sh --flow compile <your_project_name> (e.g. quartus_sh --flow compile top ) This issue is scheduled to be fixed in a future release of the Quartus II software. Custom Fields values: ['novalue'] Troubleshooting novalue False ['novalue'] ['FPGA Dev Tools Quartus II Software'] novalue 12.1.1 ['Programmable Logic Devices'] ['novalue'] ['novalue'] ['novalue']