C API equivalent of EngineBuilder::setMArch?

I’m using MCJIT, and I’m trying to coax it into generating code for the native architecture, e.g. use AVX2 instructions on x86-64.

It looks like this is possible using EngineBuilder::setMArch().

However, I’m using the C interface, and I don’t see an obvious equivalent.

Is it possible to do this?