The Battle for Wesnoth Forums

That's correct. You can also test it out for example with:

kurt751 wrote: July 11th, 2026, 4:23 pm What's a "symbol A"?

The name of the macro.

If you have

#define A
#enddef

then you have defined the symbol A.

Maybe important to mention as well is that the preprocessor is an entirely separate system - essentially it's a fancy find-and-replace that runs before Wesnoth tries to read the WML of your add-on. So say you have this:
#define ...

Apparently it was somehow missing from https://wiki.wesnoth.org/CampaignWML, but you'd want to use the define attribute of [campaign]. For example: https://github.com/wesnoth/wesnoth/blob ... in.cfg#L16

You can do that, you'd just need to reference each of the campaign-specific _main.cfg files from the root one.

Interesting. Any example where I can check how actually this works? I'm meaning, the exact syntax?


In the root _main.cfg, use file inclusion (https://wiki.wesnoth.org ...

Yes.

What would be nice is to be able to put several campaigns in the same /scenario folder, and have different _main.cfg files for each (guess they would need to have personalized names, like "_main_MyFirstCampaign.cfg", "_main_MySecondCampaign.cfg"). Oh well.


You can do that, you'd just need to ...

June has been added.

The newest release of the new development series, Wesnoth 1.19.25 , is now available. Check the forum thread for a list of the most notable changes in this version, as well as the more technical full changelog for enthusiasts and content creators.

The source code and Windows and macOS packages are ...

Wesnoth 1.19.25 is out!




This new release in the 1.19.x development series sees various changes and improvements in various areas.

As this is a development version, we would like to remind everyone how the testing and feedback process works for these:

If you download Wesnoth stand-alone ...

It looks like you started with https://github.com/wesnoth/wesnoth/blob/1.18/data/game_config.cfg as a base for some reason? Since those are specific to that file, not the wesnothd config file, so the reason it seems like it doesn't find anything is because it's looking for attributes at the the root ...

May has been added.

The newest release of the new development series, Wesnoth 1.19.24 , is now available. Check the forum thread for a list of the most notable changes in this version, as well as the more technical full changelog for enthusiasts and content creators.

The source code and Windows and macOS packages are ...

Wesnoth 1.19.24 is out!




This new release in the 1.19.x development series sees various changes and improvements in various areas.

As this is a development version, we would like to remind everyone how the testing and feedback process works for these:

If you download Wesnoth stand-alone ...

What OS and Wesnoth version are you running?