[SOLVED] Undefined reference to '_imp___...' when compiling DLL

bruceoutdoors

Hey all I'm been searching awhile and I can't find a solution so... I'm trying to build this dynamic library and it keeps outputting this type of errors:

@
error: undefined reference to Enum::toString() const' error: undefined reference to _imp___ZN4EnumC2Ei'
error: undefined reference to `_imp___ZN4EnumD2Ev'
[...]
@

and in my *.pro file I have DEFINES += CUSTOMER_DLL, so I'm kinda guessing the problem can be determined from these 2 files:

custType.h
@
#ifndef CUST_TYPE_H
#define CUST_TYPE_H

#include <enum.h>
#include "cexport.h"

class CUSTOMER_EXPORT CustomerType : public Enum {
public:
CustomerType(int value=0): Enum(value) {}
CustomerType(QString ctyp);
const NameMap& nameMap() const;

};
#endif
@

cexport.h
@
#ifndef CUSTOMER_EXPORT

#include <QtGlobal>

/** Macro definition for exporting symbols to a DLL on Windows */

#ifndef Q_OS_WIN
#define CUSTOMER_EXPORT
#elif defined(CUSTOMER_DLL)
#define CUSTOMER_EXPORT Q_DECL_EXPORT
#else
#define CUSTOMER_EXPORT Q_DECL_IMPORT
#endif

#endif // #ifndef CUSTOMER_EXPORT
@

This is part of the source code from 'An Introduction to Design Patterns in C++ with Qt' in the libs folder. Let me know if I'm missing out anything.

Windows 7 32bit, Qt 4 and 5

ChrisW67

You need to link to the library that contains the compiled Enum class that you are trying to subclass. Your PRO file probably need a LIBS entry to suit. I don't have that source so I cannot be certain of precisely what's required.

bruceoutdoors

You're right... so I removed an include to a *.pri file and add the library

@
win32: LIBS += -L$$PWD/../../build-libs-Qt_5_0_2-Debug/dataobjects/debug/ -ldataobjects
@

I know it sounds vague and all but thanks!