Provide additional DLL Directory in node-module using bindings.gyp

Question

We have an app with multiple node-module having dependency on the same DLL (C.DLL). Both of these node-modules needs the C.DLL to be present in their directory for successful loading. Our current structure looks like this-

<node-module>
    <node-a>
         <build/Release/A.node>
         <C.DLL>
    <node-b>
         <build/Release/B.node>
         <C.DLL>       

We want to use the C.DLL present in node-a while loading the node-b to avoid additional coppies of the same DLL. One way that works for us is by adding the path to <node-a/C.DLL> to system PATH var. Also creating a symlink of C.DLL inside node-b folder also works. Is there any way to do this using VCLinkerTools or bindings.gyp?