CheckCXXCompilerFlag¶
Check whether the CXX compiler supports a given flag.
- check_cxx_compiler_flag¶
- check_cxx_compiler_flag(<flag> <var>) - Check that the - <flag>is accepted by the compiler without a diagnostic. Stores the result in an internal cache entry named- <var>.
A positive result from this check indicates only that the compiler did not issue a diagnostic message when given the flag. Whether the flag has any effect or even a specific one is beyond the scope of this module.
Note
Since the try_compile() command forwards flags from variables
like CMAKE_CXX_FLAGS, unknown flags
in such variables may cause a false negative for this check.
