[wxMac 2.8.4] Got my code to compile, but not link

[Matt Connolly]

Just today I came up with the same "wxOnAssert" link error when  
building UNICODE libraries with the xcode project from wxWidgets 2.8.4.

The problem was very simple: the precompiled header was not being  
made for "objective-c++" only "c++".

The ".mm" files did not include "wx/prec.h" at the top of them, so  
they were relying solely on the precompiled headers. Since enabling  
UNICODE is done via setting the wxUSE_UNICODE build flags, this  
wasn't being set, so the Objective-C++ files were being linked  
against the wrong thing.

After adding the precompiled headers for "objective-c++", the problem  
went away.

However, I think that the standard #include <wx/prec.h> should be  
placed at the top of the .mm files for projects that do not have a  
precompiled prefix header.

Regards,
Matt


On 26/06/2007, at 3:40 AM, David Goldsmith wrote:

> David L Goldsmith wrote:
>> Robin Dunn wrote:
>>>
>>> What do you get when you run this:
>>>
>>>     /usr/local/bin/wx-config --libs
>> Oooh, loads and loads!
>>> That is what you should use for linking, if that doesn't work  
>>> then there is a bug.
>> OK, of the wx things it couldn't find, that eliminated all but  
>> wxOnAssert - it still can't find that.
> I built an ansi build of wx and tried to build the same code  
> against that - that got rid of the missing wxOnAssert symbol linker  
> error; is that a bug in the Unicode build process/result?
>
> DG
>
>
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