Zachary Turner d119fa028a Fix the MinGW builder. Apparently std::call_once and ...

std::recursive_mutex are not available on MinGW and breaks the
builder.  Revert to using a function local static and sys::Mutex
just to get the tree green until we figure out a better solution.

llvm-svn: 211424

2014-06-21 00:24:51 +00:00

2.6 KiB

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