XCFramework missing boost/asio/ssl.hpp

I've tried a few different versions of Boost (1.76.0, 1.79.0 and 1.80.0 for example) and the final XCFramework seems to have excluded boost/asio/ssl.hpp. boost/asio is there, and there's other stuff in there. Am I missing a library or other setting? I'm trying to update the boost library and need openssl support in the new xcframework.