[PATCH] D51441: Add predefined macro __gnu_linux__ for proper aux-triple

[Artem Belevich via Phabricator via cfe-commits]

tra accepted this revision.
tra added a comment.
This revision is now accepted and ready to land.

While we're here, perhaps `Builder.defineMacro("__linux__")` should be changed to `DefineStd("linux")` which defines `linux/__linux/__linux__`?


https://reviews.llvm.org/D51441