compile error on M1 chip

[lollipopcorn]

Dear developer,

I got the following error:

clang: error: the clang compiler does not support ‘-march=native’

when compiling the example “thermal/porousPlate2d” on Macbook air with M1 (2020). Is this error exclusive to M1 chip? Do you have any plan on fixing this in the future?

Thanks
John

[Adrian]

Thanks for your report. However, this likely is not something that we can fix on our end – a quick web search suggests that the “march=native” flag only works on architectures where defaults are provided by clang. You can check if something marching A1 is available via “clang –print-supported-cpus” in more recent clang versions.

Alternatively you may also drop the “march=native” flag completely as it is not required to get a working build (e.g. it is not included in the default debug flags).

I’d be interested in hearing if something breaks after that as I have not yet had the chance to test OpenLB on M1.

[lollipopcorn]

Thanks for your prompt reply.
Just an update. I removed “march=native” flag and now it works on M1.

[Author]

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