[SOLVED] Adding List to TinyMudServer Yields Linker Errors

Posted by Arew264 on Sun 31 Dec 2006 03:38 AM — 6 posts, 21,210 views.

Arew264 Sun 31 Dec 2006 03:38 AM #0

I have been trying to add a list to tinymudserver. It is a list of an object I have added called tArea, which is in its own area.h file. Also in area.h I have put in:


typedef std::list <tArea*> tAreaList;
typedef tAreaList::iterator tAreaListIterator;

To my understanding, this is defining the datatype tAreaList as a list of pointers to tArea objects, and defining an iterator for that list of pointers to tArea objects.
To create a global area list, I have added


#include "area.h"

to globals.h and then added the line:


extern tAreaList arealist;

to define the global area list. To my understanding this should create a global list of areas, yet when I try to use the area list, g++ compiles it fine but I get linker errors:


undefined reference to `_arealist'

These errors occur whenever I try to use the area list, but in case it matters I am including both globals.h and area.h and the first line of this code throws the error:


     for(tAreaListIterator iter = arealist.begin(); iter != arealist.end(); iter++)
     {
          (*iter)->LoadArea();
     }

There is probably something blaringly obvious that I am doing wrong here, but I can't see it and I am going nuts trying to figure this out.

Arew264 Sun 31 Dec 2006 03:40 AM #1

Just realized I have a typo in the subject line, and something odd happened with the fonts in my post. Shame I can't edit it. Sorry to anyone that is bothered by it.

Zeno USA Sun 31 Dec 2006 03:44 AM #2

You should be able to edit your post title, and post.

Arew264 Sun 31 Dec 2006 03:50 AM #3

Well, I feel like an idiot. I'm guessing that line in globals.h serves as a "prototype"?

I added


tAreaList arealist;

to globals.cpp and the whole thing started working.

Thanks for putting great reference materials on here, what tipped me off was your implementation of classes in the Tinymudserver v2 topic.

Arew264 Sun 31 Dec 2006 03:51 AM #4

Ah, I can't edit the subject but I fixed the font problem.

I'm used to logging in when I post and the system keeping me logged in.

Zeno USA Sun 31 Dec 2006 03:58 AM #5

There should be a "Amend subject description" link to do that.