Fix build when using clang-cl on Windows #129
Merged
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The Clang front-end provided with Visual Studio,
clang-cl.exe
, does not support the/Qspectre
or/MP
compiler flags. This patch adds logic to check that theCMAKE_C_COMPILER_ID
/CMAKE_CXX_COMPILER_ID
variables are notClang
before appending the unsupported flags toCMAKE_C_FLAGS
/CMAKE_CXX_FLAGS
.