error: redefinition of 'filter_coeffs' constant int filter_coeffs[2 * 2 * 2 * FILTER_TAPS] = { - error: redefinition of 'filter_coeffs' constant int filter_coeffs[2 * 2 * 2 * FILTER_TAPS] = { Description You may see this error message when compiling the OpenCL downscaler.cl kernel file using Quartus® Prime software version 16.0 Resolution This problem is fixed in Quartus® Prime software version 16.1. Custom Fields values: ['novalue'] Troubleshooting FB: 387408; False ['novalue'] ['FPGA Dev Tools Quartus® Prime Software Pro'] 16.1 16.0 ['Programmable Logic Devices'] ['HLD Tools OpenCL'] ['novalue'] ['novalue']