Note that `windows-msvc` is not supported by GCC. It is only supported
by Microsoft's own proprietary tools, and LLVM. Thus, the only free
software implementation of this target calls it `windows-msvc`.
`winnt` I do see in config.log, but I have never seen used in the wild.
I think it is just detritus from some obscure Alpha CPU thing. It is (a)
untested, and (b) almost removed in
554e3feb158dbde3193c05fddec422c3c93531cd.
See
https://lists.gnu.org/archive/html/config-patches/2017-09/msg00000.html
for first message in the thread that led to that commit; In Ben's own
words (in a reply to that original message):
Thanks. I'm not normally inclined to remove triplets (because I find
it a useful way to preserve the history!) but in this case, it's too
confusing for all of these defunct attempts to do Unix on Windows.
This `winnt`is but more detritus from such defunct attempts. I would
deprecate it so it no longer confuses people. (Deprecation I think is
better than sudden removal.)
John
