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You don't on new projects. CMake + ninja has support for modules on gcc, clang, and MSVC.

This should be your default stack on any small-to-medium sized C++ project.

Bazel, the default pick for very large codebases, also has support for C++20 modules.

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Thanks. It's been a long time since I started a C++ project, and I've never set up any build chain in Visual Studio or Xcode other than the default.
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How about using Zig to build C++ projects?
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