On Mon, 21 Jan 2019, Martin Liška wrote:

> I like the if('lp64'), if('ilp32') approach and I'm sending patch 
> candidate for that. Would it be accepted by glibc folks?

Since glibc supports libmvec for x86_64, both 64-bit and x32, but not for 
32-bit x86, those particular conditionals are insufficient because they 
can't distinguish x32 (libmvec supported) from 32-bit x86 (libmvec not 
supported); you need some architecture-specific conditional that can be 
used in the Fortran header.

-- 
Joseph S. Myers
joseph@codesourcery.com