Re: [wxCode-users] undefined reference to `vtable for wxCustomButton'

[Francesco M. <f18...@ya...>]

Hi,

Jonathan Haws ha scritto:
> I am having troubles compiling my application that makes use of wxCustomButton in wxThings.  A build log is included.
> 
> I had this error once before and it was due to some interesting compiler directives.  I found that those are included in wxCustomButton:
> 
> #if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
>         #pragma implementation "toggle.h"
> #endif
> 
> What do those lines do?
these lines can be removed; more precisily, it would be _better_ to remove them. 
They can only cause troubles nowadays; they were once used to obtain compile 
time gains...

>  Would they be causing this undefined reference to vtable for wxCustomButton?
yes; that's a possible cause

>  If not, what would and how can I resolve it?
another reason could be that the makefile is not linking the EXE to the object 
file for wxCustomButton...

> 
> Note that I did try commenting out those lines in the code and recompiling.  That did not help.
hmmm, strange. Did you recompile from scratch (i.e. removing any *.o of the old 
compile process)?

Can you compile&link the wxThings samples?

If you can, then the problem seems to rely in your sources (or in your makefile)...

Francesco