[LLVMdev] LLVM_ENABLE_THREADING=ON by default in Windows, is this right?

[David Bakin]

I'm not sure what LLVM_ENABLE_THREADS impacts - whether it is LLVM
executables themselves or LLVM-generated code - but it seems to be on by
default on the Windows CMake build (I'm building LLVM+Clang at trunk head
using CMake/Visual Studio 2013 Win64).

But 3 unit tests in IR, which are compiled only if define
LLVM_ENABLE_THREADS is set, fail if LLVM_ENABLE_THEADS=ON:
ValueMapTest/{0,1,2}.LocksMutex.

Should LLVM_ENABLE_THREADS be OFF for the Windows Visual Studio builds?  Or
something else?  Should something about this switch be documented at the
"Building LLVM With CMake" page, e.g., here
http://llvm.org/docs/CMake.html#llvm-specific-variables ?

Thanks -- David
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