win32 build stops with linker error

[Peter Kümmel]

Peter Kümmel wrote:
> David Faure wrote:
>> On Tuesday 07 February 2006 23:05, Peter Kümmel wrote:
>>> David Faure wrote:
>>>> On Tuesday 07 February 2006 20:29, Christian Ehrlicher wrote:
>>>>>> kio.lib(kio.dll) : error LNK2005: "public: class QString & __thiscall QMap<class QString,class QString>::operator[](class QSt
>>>>>> ring const &)" (??A?$QMap at VQString@@V1@@@QAEAAVQString@@ABV1@@Z) already defined in khtml_printsettings.obj
>>>>>> kio.lib(kio.dll) : error LNK2005: "public: __thiscall QMap<class QString,class QString>::~QMap<class QString,class QString>(v
>>>>>> oid)" (??1?$QMap at VQString@@V1@@@QAE at XZ) already defined in khtml_settings.obj
>>>> Buuh :(
>>>>
>>>> IIRC you need "template class QMap<QString,QString>;" in global.cpp
>>>> to force a template instantiation there, so that dependent libs don't do it themselves.
>>> I've tested it, but this doesn't help, like the error message indicates:
>>> there is already a instantiation in kio.
>> I just saw something similar in another project here.
>> It seems that the explicit instantiation should be in the .h, not in the .cpp,
>> and with dlllimport.
>> Hmm, that's what you tried first, but try with s/extern template/template class/ ?
>>
>> Please don't change the base class, we would have to redefine the whole QMap API...
>>
> 
> #ifdef Q_OS_WIN
> template class __declspec(dllexport) QMap<QString, QString>;
> #endif
> 
> Does the job.
> Peter

Maybe we could also fix this error by including kio/kio/global.h at the
right place in khtml.

But currently the build system is broken on win2k, because moc is
called with too much parameters thus the command line becomes too long.

Peter