Before I go and storm through the gif89a docs to create an animated gif encoder, is there an available C or C++ interface for turning a set of images into frames for an animated gif? I have heard of a mythical GIF89.DLL for the creation of GIF's but I have not found documentation. It only exports these

DllCanUnloadNow
DllGetClassObject
DllGetClassObject
DllUnregisterServer

I just want to create some animated GIF's now that the patent has expired!