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I attempted to build the libraries with homebrew LLVM 18.1.8 on an M1 Pro Mac running macOS 14.5, but Boost.Cobalt and Boost.Log both fail to build because of: Undefined symbols for architecture arm64: "std::exception_ptr::__from_native_exception_pointer(void*)", referenced from: std::exception_ptr std::make_exception_ptr[abi:ne180100]boost::system::error_code(boost::system::error_code) in exception.o boost::asio::detail::thread_info_base::capture_current_exception() in main.o "___cxa_init_primary_exception", referenced from: std::exception_ptr std::make_exception_ptr[abi:ne180100]boost::system::error_code(boost::system::error_code) in exception.o boost::asio::detail::thread_info_base::capture_current_exception() in main.o ld: symbol(s) not found for architecture arm64 I have opened an issue against homebrew here: https://github.com/Homebrew/homebrew-core/issues/178435. There are linked LLVM issues, and a comment from a Homebrew maintainer that says a workaround has already been applied to brewed LLVM to fix the LLVM issues. On the positive homebrew GCC-14 and Xcode provided clang 15.0.0 both successfully build the libraries. Matt