Re: [PATCH] Change module interface to no longer use GMP objects directly.

[Paul Eggert]

On 11/23/19 12:46 PM, Stefan Monnier wrote:
> recompiling --with-wide-int or
> --without-wide-int shouldn't affect the modules's binary compatibility.

Sure, but recompiling with gcc -m32 or -m64 does affect binary compatibility. 
Choice of binary API can be affected not only by the CPU model, but also by a 
bunch of other stuff including compiler, compiler options and libraries. Even if 
some of these choices do not affect binary compatibility, other choices do and 
developers must take this into account anyway.