I have a DLL
LINK : fatal error LNK1194: cannot delay-load 'two.dll' due to import
of data symbol '"__declspec(dllimport) const TwoClass::`vftable'"
(__imp_??_7TwoClass@@6B@)'; link without /DELAYLOAD:two.dll
Have a look here, seems that the person had exactly the same problem and found a workaround
I managed to get the delay loading to work in release build by disabling the optimizations on the translation unit that was using SomeClass class - somehow it took away the dependency on exported vtable.