Compiling LegacyClonk fails after following README

[Enthusiastus]

Following the README.md compiling LegacyClonk on latest Visual Studio 2022 fails with:

Error LNK2038 mismatch detected for '_ITERATOR_DEBUG_LEVEL': value '0' doesn't match value '2' in cmake_pch.cxx.obj C:\Users\amki.AD\LegacyClonk\out\build\x64-Debug\LegacyClonk C:\Users\amki.AD\LegacyClonk\out\build\x64-Debug\fmt.lib(format.obj) 1
Error LNK2038 mismatch detected for 'RuntimeLibrary': value 'MD_DynamicRelease' doesn't match value 'MDd_DynamicDebug' in cmake_pch.cxx.obj C:\Users\amki.AD\LegacyClonk\out\build\x64-Debug\LegacyClonk C:\Users\amki.AD\LegacyClonk\out\build\x64-Debug\fmt.lib(format.obj) 1

Error LNK1319 2 mismatches detected C:\Users\amki.AD\LegacyClonk\out\build\x64-Debug\LegacyClonk C:\Users\amki.AD\LegacyClonk\out\build\x64-Debug\clonk.exe 1

Setting the compilation to "Release" in CMakeSettings.json works and creates a release build just fine. That step isn't mentioned in the README file and I couldn't get a Debug build to work yet.

[Remus76]

This is probably happening because the static fmt.lib uses a release version of the MS C Runtime Library which is incompatible to your debug object files.

The clean solution would be to use a fmt.lib debug build. I had the same problem some time ago so I configured the GitHub runner to get deps for all Windows targets (x86/x64 + Debug/Release). Then added it to the downloaded deps and replaced all files. So I have a deps folder for each of the four build targets prepared and let CMake choose the right one.

[Fulgen301]

Set CMAKE_MSVC_RUNTIME_LIBRARY to MultiThreadedDLL. Will update the README.