Does Lazarus (or preferably FPC) define something that can be checked in source when it's building a dynamic library (.dll or .so)?

Usage case is that I want to build part of a larger project as a .so, and would like to be able to be able to exclude units that aren't relevant (so that users see tight binaries when they expect them). I'll probably have various -d settings, but would obviously prefer to reference standard defines where possible.

Seems not, I guess you'll have to use your custom defines. Unused units will be left out automatically if you use smartlinking, with prerequisites that the unit must not have any initialization/finalization section.

leledumbo wrote

Seems not, I guess you'll have to use your custom defines. Unused units will be left out automatically if you use smartlinking, with prerequisites that the unit must not have any initialization/finalization section.

Thanks for that, just wanted to make sure I'd not missed anything.

The problem is that there's quite a lot of circular imports I'm having to break. Nothing insurmountable :-)