g++ -o Problem

[Cartman]

Hi All
I'm working in c++ a long time ago, actually i'm java developer, but
need to compile a cpp class to make one integration in a EAI solution.
When run the next link option
g++ obj/CreateXmlDocument.o  -o "bin\CreateXmlDocument.exe"
-L"C:/dir/lib"
i receive the next error
obj/CreateXmlDocument.o(.text+0x17f):CreateXmlDocument.cpp: undefined
reference to `rwsf::sdo::DataFactory::getDataFactory()'
and others similars
i suppose need some lib file but i put them in C:/dir/lib, what more
need to do?