[libunwind] Add a _LIBUNWIND_VERSION macro
authorLouis Dionne <ldionne.2@gmail.com>
Fri, 4 Mar 2022 19:34:46 +0000 (14:34 -0500)
committerLouis Dionne <ldionne.2@gmail.com>
Wed, 30 Mar 2022 15:23:36 +0000 (11:23 -0400)
commitf29002a4b71b7734dfc4bd0e62eec2d341edb3fd
treeea8a79387946a72ba46be65ed28c4f2b851d1652
parent436b875e49ec05f24f7d7660a82fc5c5780221a0
[libunwind] Add a _LIBUNWIND_VERSION macro

This allows us to detect whether we're being compiled with LLVM's libunwind
more easily, without CMake having to set explicit variables.

As discussed in https://llvm.org/D119538.

Differential Revision: https://reviews.llvm.org/D121015
libcxx/docs/Contributing.rst
libcxxabi/CMakeLists.txt
libcxxabi/src/cxa_personality.cpp
libunwind/include/__libunwind_config.h