[libcxx] cannot build with clang++ --target=x86_64-windows-msvc #114591
Description
hello, No known features for the CXX compiler. What's going on?
-- Performing Test CXX_SUPPORTS_WNO_ERROR_FLAG -- Performing Test CXX_SUPPORTS_WNO_ERROR_FLAG - Failed -- Performing Test CXX_SUPPORTS_EHSC_FLAG -- Performing Test CXX_SUPPORTS_EHSC_FLAG - Failed -- Configuring done (11.3s) CMake Error in /home/csrg/toolchains_build/llvm-project/libcxx/src/CMakeLists.txt: No known features for CXX compiler "Clang" version 20.0.0. CMake Generate step failed. Build files cannot be regenerated correctly. runtimesconfigure build failure