[libcxx] r243574 - Recommit r243503 "[libcxx] Cleanup CMake configuration and integrate with LLVM"

[Jonathan Roelofs]

On 7/30/15 12:47 PM, Alexey Samsonov wrote:
> I actually support the idea of including LLVM CMake modules from
> libc++ CMake: the logic for building instrumented LLVM and building
> instrumented libc++ should better be listed in a single place, and be
> controlled by LLVM_USE_SANITIZER options: i.e. when we configure
> libc++ from compiler-rt, we should pass -DLLVM_USE_SANITIZER=Thread
> rather than -DCMAKE_CXX_FLAGS=-fsanitize=thread. It's not possible to
> do this right now, though (for instance we build two different
> versions of MSan-libc++), but I think I'd be able to work on that
> once your patch lands and the dust settles.
>

What would/does `-DLLVM_USE_SANITIZER=Thread` do differently than
`-DCMAKE_CXX_FLAGS=-fsanitize=thread` here?


Jon


-- 
Jon Roelofs
jonathan at codesourcery.com
CodeSourcery / Mentor Embedded