Brad King 1baf122cd4 MSVC: Do not add /W3 to CMAKE_<LANG>_FLAGS by default ...

We do not add default warning flags on other compilers, and having
a warning flag in the default flags makes it hard for projects to
customize the warning level.  They need to use string processing
to remove `/W3` from `CMAKE_{C,CXX}_FLAGS`.  Therefore we should
drop it.

However, projects may be using string processing to replace `/W3`
with another flag, so we cannot simply drop it.  Add a policy to
drop it in a compatible way.

Fixes: #18317

2019-04-19 12:56:49 -04:00

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CMakeLists.txt

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CMP0092-common.cmake

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CMP0092-NEW.cmake

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CMP0092-OLD.cmake

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CMP0092-WARN.cmake

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RunCMakeTest.cmake

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