FPG Symbol Not Found

[gregv]

Hello everyone!

I'm trying to use some of the generic collections in fpc.  Everything seems to compile, but linking poses a problem.

I get the following errors:

Code: Pascal  [Select][+][-]

1. Portfolio.lpr(21,1) Error: Undefined symbol: VMT_$FGL_$$_TFPGMAP$2
2. Portfolio.lpr(21,1) Error: Undefined symbol: FGL$_$TFPGMAP$2_$__$$_CREATE$$TFPGMAP$2

Obviously something isn't getting compiled and sent to the linker.  Is there a requirement that I need to use TFPGMap, or some extra files?

Thanks!

[marcov]

No. Either you hit a compiler bug, or maybe you are mixing versions. (if you upgraded FPC/Lazarus recently, did you clean out old .o/.ppu's ?)

If that is not the case, make a minimal console program demonstrating the problem and post it on the bugtracker (or first here, and I'll tell you if I can repoduce before you go to the bugtracker )

[gregv]

I made a simple console application

Code: Pascal  [Select][+][-]

1. program Project1;
2.  
3. {$mode objpfc}{$H+}
4.  
5. uses Classes, fgl;
6.  
7. type
8.  
9. TMyMap = specialize TFPGMap<String, Integer>;
10.  
11. var
12. MyMap = TMyMap;
13.  
14. begin
15. MyMap := TMyMap.Create;
16. end.

There was no problem in linking this.  In the other application, I chose the "Build and Clean" option in the project menu.  Further, I deleted all the files in the "lib" folder.

There are still problems linking this application.  Where else are previously compiled files located?

[howardpc]

You could try deleting the /lib subdirectory (it will be recreated at compilation).

[gregv]

Deleting the subdirectory did not change the results.

[gregv]

Bit of a false alarm.  There was a stray TFPGMap.Create in my original application that screwed things up.  Using the helper type (such as the console application posted) corrected the problem.

Sorry!