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From Unknown Programmer <unknown_program...@excite.com>
Subject Re: Unable to comile C++ client on VC++ 2003
Date Tue, 11 Mar 2008 17:39:33 GMT

Here is the possible fix for vc2003 professional ie MSC_VER 1310 but should
work for the express version also.
This is for activemq-cpp-2.1.3

vc2003 doesn't like virtual function returning different types.
all cloneDataStructure() const funtions in all
src\main\activemq\connector\openwire\commands files expact of course
DataStructure class returns the derived class* and not DataStructure*.

ie openwire\commands\TransactionInfo.h
virtual TransactionInfo* cloneDataStructure() const;

if you change cloneDataStructure return values to DataStructure*
so 
virtual TransactionInfo* cloneDataStructure() const;
becomes
virtual DataStructure* cloneDataStructure() const;

I did a #ifdef check

ie.
virtual
#if defined _MSC_VER && _MSC_VER == 1310
DataStructure*
#else
TransactionInfo* 
#endif
cloneDataStructure() const;

did same in each cpp file. 

if defined _MSC_VER && _MSC_VER == 1310
DataStructure*
#else
TransactionInfo*
#endif
TransactionInfo::cloneDataStructure() const {
    TransactionInfo* transactionInfo = new TransactionInfo();

    // Copy the data from the base class or classes
    transactionInfo->copyDataStructure( this );

    return transactionInfo;
}

Once this is done you need to change
src/main/activemq/connector/openwire/OpenWireConnector.cpp
in every place it calls ->cloneDataStructure() you need to put it inside a
dynamic_cast<..>(...) of the type needed

ie. line 558
consumerInfo->setDestination( amqDestination->cloneDataStructure() );

becomes

#if defined _MSC_VER && _MSC_VER == 1310
        consumerInfo->setDestination(
dynamic_cast<commands::ActiveMQDestination*>(amqDestination->cloneDataStructure())
);
#else
        consumerInfo->setDestination( amqDestination->cloneDataStructure()
);
#endif

I have compiled this on linux(gcc 3.4), solaris(sunstudio 11) and now
windows XP vc2003.

I getting close to testing it on windows but haven't yet.
But it did compile. :jumping:

Hope this helps those that want to use vc2003.

U P :working:


David@BOBJ wrote:
> 
> Hi,
> 
> I tried to compile the C++ client on VC++ 2003. I had to change the
> version of VC++ in .sln and .vcproj to make it loaded by VC++ 2003. When I
> compiled it, I got quick a few errors. Example:
> 
> TransactionInfo.cpp
> ..\src\main\activemq\connector\openwire\commands\TransactionInfo.h(77) :
> error C2511: 'activemq::connector::openwire::commands::DataStructure
> *activemq::connector::openwire::commands::TransactionInfo::cloneDataStructure(void)'
> : overloaded member function not found in
> 'activemq::connector::openwire::commands::TransactionInfo'
>        
> ..\src\main\activemq\connector\openwire\commands\TransactionInfo.h(47) :
> see declaration of
> 'activemq::connector::openwire::commands::TransactionInfo'
> ..\src\main\activemq\connector\openwire\commands\TransactionInfo.h(77) :
> error C2511: 'activemq::connector::openwire::commands::DataStructure
> *activemq::connector::openwire::commands::TransactionInfo::cloneDataStructure(void)'
> : overloaded member function not found in
> 'activemq::connector::openwire::commands::TransactionInfo'
>        
> ..\src\main\activemq\connector\openwire\commands\TransactionInfo.h(47) :
> see declaration of
> 'activemq::connector::openwire::commands::TransactionInfo'
> 
> Does anyone knows how to fix it? 
> 
> I had tried different compile flags. But no luck.
> 
> Thanks
> 
> David
> 
> 

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