On Mon, 10 Dec 2018, Paul Burton wrote:
And I realise that undoing that but keeping n64 in our own filenames & macros is another type of inconsistency, but something imperfect is unavoidable at this point given that the engineers way back when decided to use "ABI64" for n64.
My feeling has been n32 was invented at SGI as an afterthought, hence the choice of having ABI32 or ABI64 defined for the 32-bit (now o32) and the 64-bit (now n64) ABI respectively was reasonable.
FWIW,
Maciej