Fix MSVC warning D9025 ("overriding '/W3' with '/W4'") (#1072)

See https://stackoverflow.com/questions/58708772/cmake-project-in-visual-studio-gives-flag-override-warnings-command-line-warnin

--
This change was extracted from #1013, in order to isolate some of the changes.
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Anton Kolesnyk 2020-12-03 08:16:40 -08:00 committed by GitHub
parent 222967cc89
commit 3145ec02c1
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@ -8,6 +8,9 @@ if(MSVC)
set(WARNINGS_AS_ERRORS_FLAG "/WX")
endif()
# https://stackoverflow.com/questions/58708772/cmake-project-in-visual-studio-gives-flag-override-warnings-command-line-warnin
string(REGEX REPLACE "/W3" "/W4" CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS}")
#https://stackoverflow.com/questions/37527946/warning-unreferenced-inline-function-has-been-removed
add_compile_options(/W4 ${WARNINGS_AS_ERRORS_FLAG} /wd5031 /wd4668 /wd4820 /wd4255 /wd4710 /analyze)
elseif(CMAKE_C_COMPILER_ID MATCHES "Clang")