drivers/src/altera_s10_mailbox_client.c:32:59: error: 'OS_FLAG_SET' undeclared (first use in this function); did you mean 'ALT_FLAG_SET'? - drivers/src/altera_s10_mailbox_client.c:32:59: error: 'OS_FLAG_SET' undeclared (first use in this function); did you mean 'ALT_FLAG_SET'? Description Due to a problem Quartus ® Prime Pro Edition Software, you might see an error when compiling Nios ® V software with the mailbox Client IP and FreeRTOS because the driver software of the IP doesn't support FreeRTOS. Resolution The driver software supports Hardware Abstraction Layer(HAL) and uCOS-II. Please select one of them when generating Nios® V BSP. Custom Fields values: ['novalue'] Troubleshooting QS-23963 No ['Soft Embedded Processors RISC-V NIOS V (Primary)'] ['FPGA Dev Tools Quartus® Prime Software Pro'] No plan to fix 25.3 ['Agilex™ 5 FPGAs and SoCs', 'Agilex™ 7 FPGAs and SoCs', 'Agilex™ 9 FPGAs and SoCs', 'Agilex™ 3 FPGAs and SoCs', 'Stratix® 10 FPGAs and SoCs'] ['novalue'] ['novalue'] ['novalue']