scawful cbdc6670a1 fix(windows): properly detect clang-cl and add /std:c++latest for std::filesystem ...

Root cause analysis:
- clang-cl on GitHub Actions Windows Server 2022 cannot find std::filesystem
- The compiler defaults to pre-C++17 compatibility, exposing only std::experimental::filesystem
- Build logs show: -std=c++23 (Unix-style flag) instead of /std:c++latest (MSVC-style flag)

Key insight: CMAKE_CXX_COMPILER_FRONTEND_VARIANT is needed to distinguish:
- "MSVC": clang-cl (Clang with MSVC command-line interface)
- "GNU": regular Clang on Windows

Solution:
1. Use CMAKE_CXX_COMPILER_FRONTEND_VARIANT to properly detect clang-cl
2. Add /std:c++latest flag specifically to yaze_util target (where filesystem is used)
3. Apply as PUBLIC compile option so it propagates to dependent targets

This targets the exact source of the problem - clang-cl needs MSVC-style /std:c++latest
flag to access modern MSVC STL features including std::filesystem.

Tested approach based on CMake 3.16+ feature CMAKE_CXX_COMPILER_FRONTEND_VARIANT.

Related commits: 19196ca87c, c2bb90a3f1, b556b155a5

Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

2025-11-20 02:15:00 -05:00

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