QT + eclipse

[alberich]

Hi!

I'm a newbie on QT and eclipse. I searched a long the forum before ask.

I installed QT, eclipse, qt-eclipse integration, mingw and msys on my windows 64 system.

I created a Qt GUI project, and start coding some class to receive mail throught pop3, all is fine but when i tried to compile/exectute i get a wierd error on console output:

mingw32-make all
mingw32-make -f Makefile.Release all
mingw32-make[1]: Entering directory `C:/Documents and Settings/Eric Draven/workspace/qpop3'
g++ -enable-stdcall-fixup -Wl,-enable-auto-import -Wl,-enable-runtime-pseudo-reloc -Wl,-s -mthreads -Wl -Wl,-subsystem,windows -o "release\qpop3.exe" release\main.o release\qpop3.o release\moc_qpop3.o -L"d:\Qt\4.3.2\lib" -lmingw32 -lqtmain -lQtGui4 -lQtCore4
release\qpop3.o:qpop3.cpp:(.text+0x135): undefined reference to `_imp___ZN10QTcpSocketC1EP7QObject'
release\qpop3.o:qpop3.cpp:(.text+0x188): undefined reference to `_imp___ZN15QAbstractSocket13connectToHostERK7QStr ingt6QFlagsIN9QIODevice12OpenModeFlagEE'
collect2: ld returned 1 exit status
mingw32-make[1]: *** [release\qpop3.exe] Error 1
mingw32-make[1]: Leaving directory `C:/Documents and Settings/Eric Draven/workspace/qpop3'
mingw32-make: *** [release-all] Error 2

Any idea? what is missed?

Thanks!!

Alberich

[jacek]

You don't link your application with QtNetwork library.

[alberich]

i got this include on qpop3.h

#include <QTnetwork/QTcpSocket.h>

[jacek]

Including a header is not enough. You have to tell Eclipse to link QtNetwork module with your application. I don't use Eclipse for Qt development, but you should be able to set which Qt modules you want to use in project's settings.

[alberich]

which IDE you use?

[jacek]

which IDE you use?

I use KDevelop.

[alberich]

and for windows?

[jacek]

and for windows?

I don't use windows for development.

[alberich]

Ok, thanks!!

One more question, i linked qtnetwork module but i get the following error on ld:

mingw32-make all
mingw32-make -f Makefile.Release all
mingw32-make[1]: Entering directory `C:/Documents and Settings/Eric Draven/workspace/qpop3'
mingw32-make[1]: Nothing to be done for `all'.
mingw32-make[1]: Leaving directory `C:/Documents and Settings/Eric Draven/workspace/qpop3'
mingw32-make -f Makefile.Debug all
mingw32-make[1]: Entering directory `C:/Documents and Settings/Eric Draven/workspace/qpop3'
g++ -enable-stdcall-fixup -Wl,-enable-auto-import -Wl,-enable-runtime-pseudo-reloc -mthreads -Wl -Wl,-subsystem,windows -o "debug\qpop3.exe" debug\main.o debug\qpop3.o debug\moc_qpop3.o -L"d:\Qt\4.3.2\lib" -lmingw32 -lqtmaind -lQtGuid4 -lQtNetworkd4 -lQtCored4
D:\MinGW\bin\..\lib\gcc\mingw32\3.4.5\..\..\..\..\ mingw32\bin\ld.exe: cannot find -lqtmaind
collect2: ld returned 1 exit status
mingw32-make[1]: Leaving directory `C:/Documents and Settings/Eric Draven/workspace/qpop3'
mingw32-make[1]: *** [debug\qpop3.exe] Error 1
mingw32-make: *** [debug-all] Error 2

Any idea? sorry, for this stupid questions

[jacek]

D:\MinGW\bin\..\lib\gcc\mingw32\3.4.5\..\..\..\..\ mingw32\bin\ld.exe: cannot find -lqtmaind

You don't have the debug versions of Qt libraries. There should be a link in Start menu --- "Build Qt libraries in debug mode" or something like that.

[satlcard12]

I have downloaded and installed the Eclipse 3.3 and the Qt Eclipse Integration for Windows. I need a Qt package and I am asking for recommendations.
Thanks,
Bob

[jacek]

I need a Qt package and I am asking for recommendations.

What recommendations do you expect from us? Just download the newest version from Trolltech.

[alberich]

Jacek,

Now i got debug libreries builded. When i build them i get other errors..

mingw32-make
mingw32-make -f Makefile.Debug
mingw32-make[1]: Entering directory `C:/Documents and Settings/Eric Draven/workspace/qpop3'
g++ -c -g -frtti -fexceptions -mthreads -Wall -DUNICODE -DQT_LARGEFILE_SUPPORT -DQT_DLL -DQT_GUI_LIB -DQT_CORE_LIB -DQT_THREAD_SUPPORT -DQT_NEEDS_QMAIN -I"d:\Qt\4.3.2\include\QtCore" -I"d:\Qt\4.3.2\include\QtCore" -I"d:\Qt\4.3.2\include\QtGui" -I"d:\Qt\4.3.2\include\QtGui" -I"d:\Qt\4.3.2\include" -I"core" -I"gui" -I"network" -I"d:\Qt\4.3.2\include\ActiveQt" -I"debug" -I"." -I"d:\Qt\4.3.2\mkspecs\win32-g++" -o debug\main.o main.cpp
g++ -c -g -frtti -fexceptions -mthreads -Wall -DUNICODE -DQT_LARGEFILE_SUPPORT -DQT_DLL -DQT_GUI_LIB -DQT_CORE_LIB -DQT_THREAD_SUPPORT -DQT_NEEDS_QMAIN -I"d:\Qt\4.3.2\include\QtCore" -I"d:\Qt\4.3.2\include\QtCore" -I"d:\Qt\4.3.2\include\QtGui" -I"d:\Qt\4.3.2\include\QtGui" -I"d:\Qt\4.3.2\include" -I"core" -I"gui" -I"network" -I"d:\Qt\4.3.2\include\ActiveQt" -I"debug" -I"." -I"d:\Qt\4.3.2\mkspecs\win32-g++" -o debug\qpop3.o qpop3.cpp
g++ -enable-stdcall-fixup -Wl,-enable-auto-import -Wl,-enable-runtime-pseudo-reloc -mthreads -Wl -Wl,-subsystem,windows -o "debug\qpop3.exe" debug\main.o debug\qpop3.o -L"d:\Qt\4.3.2\lib" -lmingw32 -lqtmaind -lQtGuid4 -lQtCored4
debug\qpop3.o(.text+0x11f): In function `ZN5QPop3C2EP7QObject':
C:/Documents and Settings/Eric Draven/workspace/qpop3/qpop3.cpp:7: undefined reference to `vtable for QPop3'
debug\qpop3.o(.text+0x145): In function `ZN5QPop3C1EP7QObject':
C:/Documents and Settings/Eric Draven/workspace/qpop3/qpop3.cpp:7: undefined reference to `vtable for QPop3'
debug\qpop3.o(.text+0x1b5): In function `ZN5QPop37connectER7QStringt':
C:/Documents and Settings/Eric Draven/workspace/qpop3/qpop3.cpp:19: undefined reference to `_imp___ZN10QTcpSocketC1EP7QObject'
debug\qpop3.o(.text+0x239):C:/Documents and Settings/Eric Draven/workspace/qpop3/qpop3.cpp:22: undefined reference to `_imp___ZN15QAbstractSocket13connectToHostERK7QStr ingt6QFlagsIN9QIODevice12OpenModeFlagEE'
debug\qpop3.o(.text+0x2d3): In function `ZN5QPop315socketConnectedEv':
C:/Documents and Settings/Eric Draven/workspace/qpop3/qpop3.cpp:37: undefined reference to `QPop3::ConnStateChanged(int)'
debug\qpop3.o(.text+0x2f5): In function `ZN5QPop311socketErrorEN15QAbstractSocket11SocketE rrorE':
C:/Documents and Settings/Eric Draven/workspace/qpop3/qpop3.cpp:49: undefined reference to `QPop3::ConnStateChanged(int)'
debug\qpop3.o(.text+0x310):C:/Documents and Settings/Eric Draven/workspace/qpop3/qpop3.cpp:52: undefined reference to `QPop3::ConnStateChanged(int)'
collect2: ld returned 1 exit status
mingw32-make[1]: Leaving directory `C:/Documents and Settings/Eric Draven/workspace/qpop3'
mingw32-make[1]: *** [debug\qpop3.exe] Error 1
mingw32-make: *** [debug] Error 2

And some other weid error like the ones i got before to link network module to my project.

Thinking that coudl be mingw vesion, i build all ( qt and qt debug ) with the same version but get the same..

Thanks!

[jacek]

And some other weid error like the ones i got before to link network module to my project.

For some reason you don't link your project with QtNetwork module again. Also make sure that there's Q_OBJECT macro inside QPop3 definition (you will have to run qmake after adding it).

[alberich]

For some reason you don't link your project with QtNetwork module again. Also make sure that there's Q_OBJECT macro inside QPop3 definition (you will have to run qmake after adding it).

Both are done. I got qtnetwork module, and Q_OBJECT declared inside QPop3. This starts just after i builded debug libraries.

thanks

[jacek]

Both are done. I got qtnetwork module, and Q_OBJECT declared inside QPop3. This starts just after i builded debug libraries.

If your .pro file is OK (i.e. it contains "QT += network" or equivalent), then you have to force Eclipse to re-run qmake to generate new makefiles.

[alberich]

I done qmake several times, maybe there's something wrong with my code?

#ifndef __POP3_H_INCLUDED__
#define __POP3_H_INCLUDED__
 
 
#include <QtGui/QWidget>
//#include "ui_qpop3.h"
 
#include <QDialog>
#include <QtCore/QObject.h>
//#include <QTnetwork>
#include <QTnetwork/QTcpSocket.h>
 
//#include <QTcpSocket>
#include <QtCore/qstring.h>
 
 
class QPop3 : public QObject
{
    Q_OBJECT
private:
 
        QTcpSocket *socket;
public:
        enum ConnectState{
            CsHostFound,
            CsConnected,
            CsClosed,
            CsHostNotFound,
            CsConnectionRefused
        };
 
        // Constructor
        explicit QPop3(QObject *parent = 0);
        virtual ~QPop3();
 
        int connect(QString &servAdr,quint16 port);
 
 
signals:
        void ConnStateChanged(int);
 
private slots:
        void socketError(QAbstractSocket::SocketError e);
        void socketConnected();
 
};
 
#endif

#ifndef __POP3_H_INCLUDED__
#define __POP3_H_INCLUDED__


#include <QtGui/QWidget>
//#include "ui_qpop3.h"

#include <QDialog>
#include <QtCore/QObject.h>
//#include <QTnetwork>
#include <QTnetwork/QTcpSocket.h>

//#include <QTcpSocket>
#include <QtCore/qstring.h>


class QPop3 : public QObject
{
    Q_OBJECT
private:

        QTcpSocket *socket;
public:
        enum ConnectState{
            CsHostFound,
            CsConnected,
            CsClosed,
            CsHostNotFound,
            CsConnectionRefused
        };

        // Constructor
        explicit QPop3(QObject *parent = 0);
        virtual ~QPop3();

        int connect(QString &servAdr,quint16 port);


signals:
        void ConnStateChanged(int);

private slots:
        void socketError(QAbstractSocket::SocketError e);
        void socketConnected();

};

#endif

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Thanks once again

[jacek]

I done qmake several times, maybe there's something wrong with my code?

The code looks OK. Do you run "qmake" or "qmake -project"? The former creates makefiles from your .pro file, while the latter generates a new .pro file overwriting the old one (you should run this only once at the beginning of your project).

[jacek]

I've installed Qt-Eclipse integration on my system. It seems that as long as you have a correct .pro file, "Build Project" or "Build Make Target..." should do the magic. Eclipse is quite unstable on my system and I couldn't make Qt Project Editor to run, so I don't know how it looks like, but you can also open your .proi file in text editor to check if it's OK --- all your .h files should be listed in HEADERS variable, .cpp files in SOURCES and .ui files in FORMS. Also QT should contain at least "core", "gui" and "network".

[alberich]

I created another project, and put back the files and then all worked.

I supposed, as you said, .pro file was wrong but this is the next level :P

Thanks for all