LNK4221 and LNK4006 Warnings

I am making a static library of my own. I have taken my code which works and now put it into a static library for another program to use. In my library I am using another static library which I don't want the people who will be using my API to know. Since, I want to hide that information from them I can't tell them to install the other static library. Anyway, I used the command line Lib.exe to extract and create a smaller lib file of just the obj's I used. However, I get a bunch of LNK4006 :second definition ignored linker warnings for each obj I use followed by LNK4221 no public symbols found;archive member will be inaccessible.

I am doing this work in vs2008 and I am not sure what I am doing wrong. I am using the #pragma comment line in my .cpp file I have also modified the librarian to add my smaller .lib along with its location. my code simply makes calls to a couple functions which it should be able to get from those Obj file in the smaller lib. All my functions are implemented in .cpp file and my header just have the includes of the third party header files and come standard c++ header files. nothing fancy. I have actually no function defi开发者_如何学Cnitions in there atm. I was going to put the API definition in there and implement that in the .cpp for this static lib that i was going to make. However, I just wanted to build my code before I added more to it.

I did read http://support.microsoft.com/default.aspx?scid=kb;EN-US;815773 but it did not provide a solution.

Even if you extract all objects from the other library and put them in your own library, your users will still be able to see what's in your library and thus see all the object names. In many cases the names of the objects will reveal what's actually the other library you are using.

Instead of distributing your library as a static library, consider distributing it as a DLL. In the DLL you can easily hide all the underlying things and only make public what you want to make public.