Good news, at least for those using AFKMud 1.25
A patch to convert the codebase over to dlsym has been created. It works on a stock 1.25, but I cannot make any promises as to what else it will work with. I'd not suggest even trying on anything outside the AFK family since the results could be.... well.... BAD. Patch is available from the code page.
FixedSmaug users and Altanos users are on their own though. I don't provide support of any kind for those bases and haven't for quite some time now. You can feel free to pull apart the patch and do the work yourself, though I won't be able to help if you break something.