tree 4c273c22823a17eaada714cc7b69d4797cd78445
parent 60bef0ff5a396417e299ed680fd800864b59cb31
author Martin Storsjö <martin@martin.st> 1603260691 +0300
committer Copybara-Service <copybara-worker@google.com> 1604019884 -0700

[libcxxabi] Define _LIBCXXABI_WEAK properly for mingw compilers

Copy over the compiler detection structure from libcxx, and set
_LIBCXXABI_WEAK like _LIBCPP_WEAK is set in libcxx.

This allows users to override operator new/delete, if using those
operators from libcxxabi instead of from libcxx.

Differential Revision: https://reviews.llvm.org/D89863

GitOrigin-RevId: 5449ea9f90ea8e0adb1f8427b82dd30ccb31d96c