Comments - Can't install 10.2.12 GA on Mac OS
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Illegal instruction means this binary contains a CPU instruction that your CPU does not support.
Eg. SSE3 on a machine without it or trying to run x86_64 on a 32-bit machine
So, yes, I would file a bug if you have the correct archive and include the OS and CPU.
Thanks. Jira #MDEV-15139