Hi. We are trying to benchmark CoreMark with RIOT on esp32c3 but the results are lower compared to ESP-IDF. ESP-IDF is around twice as fast. How do we set compiler flags properly? Does anyone know how we could get better performance? We have added flags to CFLAGS_OPT.
Hello there 
To increase CoreMark speed on RIOT is with the esp32c3; use the same optimization options as ESP IDF. ESP IDF typically employs optimization levels such as O2 and O3. Add the following flags to your CFLAGS OPT. Let me about the result
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