Automatic core.autocrlf?

Is there an 'auto' setting for the 'core.autocrlf' config? Reason I
ask is, I want that setting to be 'input' on linux but 'true' on
Windows. I have a global .gitconfig that I sync across different
platforms with Google Drive, and I hate to manage 2 copies of it on
each platform (linux and Windows). If there's some way to make the
line ending configuration the same between both, that would be
awesome.

Note that I do rely mostly on git attributes files for this, however
not all upstream repositories have one, and I don't always have
permission to create one there. In those cases, when it falls back to
configuration for line ending management, I want it to be
automatically configured based on the host platform.

Any advice is appreciated here. Unfortunately Google isn't much help
on this topic, Stack Overflow is a swamp full of different information
and none of it seems authoritative.