No Visual Studio 15 2017 ARM64 option in CMake-GUI
CMake itself supports setting Windows ARM64 as the target architecture, but in the CMake-GUI "Configure" dialogue, the "Specify the generator for this project" dropdown doesn't have a "Visual Studio 15 2017 ARM64" option.
Looks like it may just need to be added to the GetGenerators function in cmGlobalVisualStudio15Generator.cxx:
virtual void GetGenerators(std::vector<std::string>& names) const
{
names.push_back(vs15generatorName);
names.push_back(vs15generatorName + std::string(" ARM"));
names.push_back(vs15generatorName + std::string(" Win64"));
}