What does gcc without multilib mean?

Question

I was trying to use the omh.h header file and I realized it was missing. I tried reinstalling gcc on my mac using brew. This is the message I got at the end of

Answer 1

Multilib means support for multiple architectures, so you can compile binaries for them.

Given the bug you show, you should be safe as long you build binaries for AMD64 architecture (64-bit) and IA32, as that is what your machine is.

Otherwise, better to choose without multilib.