unwind: clean up warnings from the build

Now thta the build is split, clean up some of the warnings in the build:
  cc1: warning: command line option '-nostdinc++' is valid for C++/ObjC++ but not for C
  cc1: warning: command line option '-fno-rtti' is valid for C++/ObjC++ but not for C

Append the C++ specific flags specifically to the C++ sources.  Avoids the
spurious warnings due to invalid flags being passed during the compilation of
C++ sources.


git-svn-id: https://llvm.org/svn/llvm-project/libunwind/trunk@235797 91177308-0d34-0410-b5e6-96231b3b80d8
1 file changed
tree: 9f6b4d440e7260680b918c005cdda3d790876117
  1. cmake/
  2. include/
  3. src/
  4. CMakeLists.txt