VBA PCL Link

Is it possible to use a portable class library from a VBA context such as Excel? I tried to add a link to the DLL, but with the error "I can not add a link to the specified file."

I wrote a regular pre-class library (with its build settings set to provide COM) that references PCL and then provides wrapper methods. This is tedious and complicated, is there a better solution that will expose PCL as-is?