Anush Elangovan 630a94b8b7 _tzcnt_u32() is undefined in clang-cl so use alternate impl ... _tzcnt_u32() is not exported by clang-cl intrin.h so check for clang-cl and enable an alterate for _tzcnt_u32() Some discussions: http://lists.llvm.org/pipermail/cfe-dev/2016-October/051329.html https://bugs.llvm.org/show_bug.cgi?id=30506 TEST=Build with clang-cl		2018-10-04 14:04:22 -07:00
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opencv2	_tzcnt_u32() is undefined in clang-cl so use alternate impl	2018-10-04 14:04:22 -07:00