How to enable c++17 for CMake?

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Now, I got this error when building using CMake:

error C2039: ‘string_view’: is not a member of ‘std’

string_view is a new feature of C++17 which must be enabled for CMake.

You can use the following command to configure your project to enable C++17 support:

cmake src -DCMAKE_CXX_STANDARD=17

Alternatively, you can set the CMAKE_CXX_STANDARD variable in CMakeLists.txt:

set(CMAKE_CXX_STANDARD 17)

You can also enable C++17 support for CMake by adding the following line to CMakeLists.txt:

target_compile_features(projectname PRIVATE cxx_std_17)

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