[PATCH] D68055: Add -fgnuc-version= to control __GNUC__ and other GCC macros

[Jacob Lifshay via Phabricator via cfe-commits]

programmerjake added a comment.

The `__GNUG__` macro is defined to be 4 rather than matching `__GNUC__`


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D68055/new/

https://reviews.llvm.org/D68055