The gSOAP toolkit is a cross-platform development environment for C and C++ SOAP/XML Web services (SOAP 1.1/1.2, WSDL 1.1). gSOAP supports XML serialization of native C/C++ data types. Includes stub/skeleton compiler, HTTP Web server, and much more.
The NorduGrid packaging of gSOAP adds patches that enables building of shared libraries.
You can get the NorduGrid packaged gSoap packages here.