[Kde-pim] Re: implicit destructor not found at link time

[Kevin Krammer]

On Thursday, 2011-04-28, Ben Taylor wrote:
> 2011/4/28 Kevin Krammer <kevin.krammer at gmx.at>:
> > Hi Ben,
> > 
> > On Thursday, 2011-04-28, Ben Taylor wrote:
> >> Compling KDEpim on Solaris 10 with Sun Studio 12.1, I get the
> >> following link error:
> >> 
> >> Undefined                       first referenced
> >> 
> >>  symbol                             in file
> >> 
> >> KOrg::CalendarDecoration::Decoration::~Decoration()
> >> ../lib/libkorganizer_core.so.4.6.0
> >> ld: fatal: Symbol referencing errors. No output written to korganizer
> >> make[2]: *** [korganizer/korganizer] Error 1
> >> make[1]: *** [korganizer/CMakeFiles/korganizer.dir/all] Error 2
> >> 
> >> Now, I believe this to be a compiler bug, that does properly instantiate
> >> the impliciit destructor.  Could someone suggest the explicit destructor
> >> so that I can finish compiling KDEpim?
> > 
> > Assuming you are working with a checkout from git, can you put a
> > respective patch for review up on git.reviewboard.kde.org?
> 
> Right now I'm just trying to finish compiling KDE4.6.2 modules. But I
> will be happy to post something on the review board if I get some
> suggestions.  I'm a C++ novice, so complicated topics like working
> around this kind of problem is something I need help with. It's likely
> that the compiler bug is either optimizing out the implicit destructor,
> or just not instantiating it.
> 
> Which is why I think I need an explicit instantiation of the
> destructor for this.
> My attempts to fix this so far, have failed (and not surprising, really)

I see.
The easiest approach would be to find the header where 
KOrg::CalendarDecoration::Decoration is declared and add

~Decoration() {}

to the public section of class Decoration.

If that works, a proper fix would be to just declare
~Decoration();

and put an empty implementation into the associated .cpp file.

Cheers,
Kevin

-- 
Kevin Krammer, KDE developer, xdg-utils developer
KDE user support, developer mentoring
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