Problem signing dylib with OSX Mavericks

Starting with OSX Mavericks, Apple changed the codesign tool. Basically, if you want to sign a .app, all nested code need to be signed too. Which means that each dylib needs to be signed.

In my app, I have many ***_libFNP.dylib files, but I can't sign them and therefore, I can't sign the .app. Is there any way to sign a Flexnet lib?

Thanks