GNU GPL question

Question

I have a C# app that hooks into a GPLed DLL via DllImport. The DLL has its own installer which we plan to package with and run from our own app's installer. Will these require us to GPL our own app as well?

Answer 1

To actually answer this question properly, you need to find a lawyer familiar with copyright law and your jurisdiction.

But for some preliminary reading, these entries in the GPL FAQ might help:

• If a library is released under the GPL (not the LGPL), does that mean that any program which uses it has to be under the GPL or a GPL-compatible license?

• I'd like to incorporate GPL-covered software in my proprietary system. Can I do this?

See also "Why you shouldn't use the Lesser GPL for your next library".

(Taken from wimvds' comment on my answer to "Query regarding GPL and LGPL?".)