How to choose compiler (cl, clang, clang-cl) on Windows?

Usage
1

On Win11, a good way to start is to open a Developer Powershell in terminal.exe. That has all the compilers and tools in the path. Specifically it has cl.exe, clang.exe, and clang-cl.exe. CMake seems to pick cl.exe by default. Is there a way to get CMake to set up the clang-based tool chain instead?

2

I is possible to select the right preset:

/Users/clausklein/Workspace/cmake/WindowsToolchain/example
Claus-iMac:example clausklein$ cmake --list-presets
Available configure presets:

  "windows-msvc-x64"         - Configure for 'windows-msvc-x64'
  "windows-msvc-spectre-x64" - Configure for 'windows-msvc-spectre-x64'
  "windows-msvc-amd64"       - Configure for 'windows-msvc-amd64'
  "windows-msvc-x86"         - Configure for 'windows-msvc-x86'
  "windows-msvc-arm64"       - Configure for 'windows-msvc-arm64'
  "windows-clang-x64"        - Configure for 'windows-clang-x64'
  "windows-clang-amd64"      - Configure for 'windows-clang-amd64'
  "windows-clangcl-x64"      - Configure for 'windows-clangcl-x64'
  "windows-clangcl-amd64"    - Configure for 'windows-clangcl-amd64'
  "ewdk"                     - EWDK configuration
Claus-iMac:example clausklein$ git describe --tags
v0.9.0
Claus-iMac:example clausklein$
3

Set CC and CXX env vars before running CMake to the compiler you want.