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Qt-interest Archive, September 2002
Linking errors

Message 1 in thread

Subject: Linking errors
From: destr0 <joellist@xxxxxxxxxxxxxxxx>
Date: Wed, 04 Sep 2002 13:01:00 -0500
Reply-to: joellist@xxxxxxxxxxxxxxxx
To: qt-interest@xxxxxxxxxxxxx

Hello,  I'm new to qt and new to C++.  I am in the process of reading 
Stroustrup (thought I'd mention that because I'm pretty sure I would get 
that from someone).  I learn best while doing, so I thought I would post 
this problem in the hopes that someone can help me so I can continue to 
make progress on my little test program.  I'm getting an error when I 
try to ling all my object files into an exacutable.

These are the errors.

command run:
gcc LSQLdbList.o LSQLstructureTable.o LSQLdataWindow.o 
LSQLprocessTable.o LSQLvariableTable.o LSQLtableEdit.o 
LSQLdbConnection.o LSQL.o -I$QTDIR/include -L$QTDIR/lib -lqt -o LSQL

All the files compile fine to make the object files listed.  When I try 
to ling them together with the above command I get this error:
LSQLdataWindow.o in function `dataWindow::dataWindow(dbConnection *)':
LSQLdataWindow.o(.text+0x221): undefined reference to 
`staticDataTable::staticDataTable( QWidget *, char const *, 
 dbConnection *)'
collect2: ld returned 1 exit status

here are the files I think need to be seen.

LSQLdataWindow.h

#ifndef __LSQLdataWindow__
#define __LSQLdataWindow__

#include <qwidget.h>
#include <qtabbar.h>
#include <qwidgetstack.h>
#include "LSQLprocessTable.h"
#include "LSQLvariableTable.h"
#include "LSQLtableEdit.h"
#include "LSQLdbList.h"
#include "LSQLdbConnection.h"
//#include "LSQLstructureTable.h"
#include "LSQLstaticDataTable.h"

class dataWindow : public QWidget
{
    public:
        dataWindow( dbConnection* );
        ~dataWindow();
       
    protected:
        virtual void resizeEvent( QResizeEvent* );
       
    private:
        QTabBar* windowMenu;
        dbConnection* localDB;
        dbList* listView;
        QWidgetStack* windowStack;
        processTable* processSlide;
        variableTable* variableSlide;
        tableEdit*    editSlide;
                        staticDataTable* structureSlide;
};

#endif

LSQLdataWindow.cpp:

#include "LSQLdataWindow.h"

dataWindow::dataWindow( dbConnection* passedConnection ) : QWidget( )
{
    const char* name = "stack win";

            localDB = passedConnection;
    listView = new dbList( this, localDB );
    windowMenu = new QTabBar( this, "Tab Menu" );
    windowStack = new QWidgetStack( this, "Window Stack" );
    processSlide = new processTable();
    variableSlide = new variableTable();
            structureSlide = new staticDataTable( windowStack, name, 
localDB );
    editSlide = new tableEdit( "newlistings" );

    QTab* processTab = new QTab( "Processes" );
    QTab* varTab = new QTab( "Server Vars" );
            QTab* structureTab = new QTab( "Table Structure" );
    QTab* tableTab = new QTab( "Table Data" );
   
    windowMenu->addTab( processTab );
    windowMenu->addTab( varTab );
            windowMenu->addTab( structureTab );
    windowMenu->addTab( tableTab );

    windowStack->addWidget( processSlide, -1 );
    windowStack->addWidget( variableSlide, -1 );
            windowStack->addWidget( structureSlide, -1 );
    windowStack->addWidget( editSlide, -1 );
    windowStack->raiseWidget( 0 );
   
    listView->setGeometry( 0, 0, 200, this->height( ) );
    listView->show();
    windowMenu->setGeometry( listView->width(), 0, 400, 
windowMenu->height( ) );
    windowStack->setGeometry( listView->width(), 24 , this->width( ) - 
listView->width(), this->height( ) - 24 );

    QObject::connect( windowMenu, SIGNAL( selected( int ) ), 
windowStack, SLOT( raiseWidget( int ) ) );
    QObject::connect(listView, SIGNAL( dbSelected( const QString& ) ), 
localDB, SLOT( changeDB( const QString& ) ) );
    QObject::connect(listView, SIGNAL( tableSelected( const QString& ) 
), editSlide, SLOT( changeTable( const QString& ) ) );
            //QObject::connect(listView, SIGNAL( tableSelected( const 
QString& ) ), structureSlide, SLOT( changeTable( const QString& ) ) );
}

dataWindow::~dataWindow( )
{

}

void dataWindow::resizeEvent( QResizeEvent* event )
{
    windowStack->setGeometry( listView->width(), 24 , this->width( ) - 
listView->width(), this->height( ) - 24 );
    listView->setGeometry( 0, 0, 200, this->height( ) );
}


LSQLstaticDataTable.h


#ifndef LSQLSTATICDATATABLE_H
#define LSQLSTATICDATATABLE_H

#include <qtable.h>
#include <qwidget.h>
#include <qsqlquery.h>
#include <qstring.h>
#include "LSQLdbConnection.h"

class staticDataTable : public QTable
{
        public:
    staticDataTable( QWidget* parent=0, const char* name=0, 
dbConnection* passDB=0 );
    ~staticDataTable( );
            void buildTable( );
            void setCurrentQuery( QString* );
            int getRowSize( );

        private:
                QSqlQuery* currentQuery;
                dbConnection* localDB;
};

#endif


LSQLstaticDataTable.cpp:


#include "LSQLstaticDataTable.h"

staticDataTable::staticDataTable( QWidget* parentWidget=0, const char* 
name=0, dbConnection* passDB=0 ) : QTable( parentWidget, name )
{
        localDB = passDB;
}

staticDataTable::~staticDataTable()
{

}

void staticDataTable::buildTable( )
{
        if( currentQuery->isActive() )
        {
                this->setNumCols( staticDataTable::getRowSize( ) );
                this->setNumRows( currentQuery->size() );

                this->setFocusStyle( QTable::FollowStyle );
                this->setSelectionMode( QTable::SingleRow );

                int i = 0;

                while( currentQuery->next() )
                {
                        int j;

                        for( j = 0; j < staticDataTable::getRowSize( ); 
j++ )
                        {
                                this->setText( i, j, 
currentQuery->value( j ).toString() );
                        }

                        i++;
                }

                for( i = 0; i < staticDataTable::getRowSize( ); i++ )
                {
                        this->setColumnReadOnly( i, true );

        this->adjustColumn( i );
                }
        }
        else
        {
                qDebug( "Failed to create database variable query " );
                qWarning( "Failed to open sales database: " + 
localDB->getDriverError() );
                qWarning( localDB->getDatabaseError() );
        }
}

void staticDataTable::setCurrentQuery( QString* passString )
{
        currentQuery = new QSqlQuery( QConstString( 
passString->unicode(), passString->length() ).string() );
}

int staticDataTable::getRowSize( )
{
        int i = 0;
        currentQuery->first();

        while( currentQuery->next() )
        {
                i++;
        }

        return i;
}


Thanks for any help!

Message 2 in thread

Subject: RE: Linking errors
From: "Smith, William R" <william.smith4@xxxxxxxxxxxxxx>
Date: Wed, 04 Sep 2002 11:21:01 -0700
Cc: qt-interest@xxxxxxxxxxxxx
To: "'joellist@xxxxxxxxxxxxxxxx'" <joellist@xxxxxxxxxxxxxxxx>

Why don't you try actually linking in the object file where staticDataTable
is defined to define the reference?

-----Original Message-----
From: destr0 [mailto:joellist@litriusgroup.com]
Sent: Wednesday, September 04, 2002 11:01 AM
To: qt-interest@trolltech.com
Subject: Linking errors


Hello,  I'm new to qt and new to C++.  I am in the process of reading 
Stroustrup (thought I'd mention that because I'm pretty sure I would get 
that from someone).  I learn best while doing, so I thought I would post 
this problem in the hopes that someone can help me so I can continue to 
make progress on my little test program.  I'm getting an error when I 
try to ling all my object files into an exacutable.

These are the errors.

command run:
gcc LSQLdbList.o LSQLstructureTable.o LSQLdataWindow.o 
LSQLprocessTable.o LSQLvariableTable.o LSQLtableEdit.o 
LSQLdbConnection.o LSQL.o -I$QTDIR/include -L$QTDIR/lib -lqt -o LSQL

All the files compile fine to make the object files listed.  When I try 
to ling them together with the above command I get this error:
LSQLdataWindow.o in function `dataWindow::dataWindow(dbConnection *)':
LSQLdataWindow.o(.text+0x221): undefined reference to 
`staticDataTable::staticDataTable( QWidget *, char const *, 
 dbConnection *)'
collect2: ld returned 1 exit status

here are the files I think need to be seen.

LSQLdataWindow.h

#ifndef __LSQLdataWindow__
#define __LSQLdataWindow__

#include <qwidget.h>
#include <qtabbar.h>
#include <qwidgetstack.h>
#include "LSQLprocessTable.h"
#include "LSQLvariableTable.h"
#include "LSQLtableEdit.h"
#include "LSQLdbList.h"
#include "LSQLdbConnection.h"
//#include "LSQLstructureTable.h"
#include "LSQLstaticDataTable.h"

class dataWindow : public QWidget
{
    public:
        dataWindow( dbConnection* );
        ~dataWindow();
       
    protected:
        virtual void resizeEvent( QResizeEvent* );
       
    private:
        QTabBar* windowMenu;
        dbConnection* localDB;
        dbList* listView;
        QWidgetStack* windowStack;
        processTable* processSlide;
        variableTable* variableSlide;
        tableEdit*    editSlide;
                        staticDataTable* structureSlide;
};

#endif

LSQLdataWindow.cpp:

#include "LSQLdataWindow.h"

dataWindow::dataWindow( dbConnection* passedConnection ) : QWidget( )
{
    const char* name = "stack win";

            localDB = passedConnection;
    listView = new dbList( this, localDB );
    windowMenu = new QTabBar( this, "Tab Menu" );
    windowStack = new QWidgetStack( this, "Window Stack" );
    processSlide = new processTable();
    variableSlide = new variableTable();
            structureSlide = new staticDataTable( windowStack, name, 
localDB );
    editSlide = new tableEdit( "newlistings" );

    QTab* processTab = new QTab( "Processes" );
    QTab* varTab = new QTab( "Server Vars" );
            QTab* structureTab = new QTab( "Table Structure" );
    QTab* tableTab = new QTab( "Table Data" );
   
    windowMenu->addTab( processTab );
    windowMenu->addTab( varTab );
            windowMenu->addTab( structureTab );
    windowMenu->addTab( tableTab );

    windowStack->addWidget( processSlide, -1 );
    windowStack->addWidget( variableSlide, -1 );
            windowStack->addWidget( structureSlide, -1 );
    windowStack->addWidget( editSlide, -1 );
    windowStack->raiseWidget( 0 );
   
    listView->setGeometry( 0, 0, 200, this->height( ) );
    listView->show();
    windowMenu->setGeometry( listView->width(), 0, 400, 
windowMenu->height( ) );
    windowStack->setGeometry( listView->width(), 24 , this->width( ) - 
listView->width(), this->height( ) - 24 );

    QObject::connect( windowMenu, SIGNAL( selected( int ) ), 
windowStack, SLOT( raiseWidget( int ) ) );
    QObject::connect(listView, SIGNAL( dbSelected( const QString& ) ), 
localDB, SLOT( changeDB( const QString& ) ) );
    QObject::connect(listView, SIGNAL( tableSelected( const QString& ) 
), editSlide, SLOT( changeTable( const QString& ) ) );
            //QObject::connect(listView, SIGNAL( tableSelected( const 
QString& ) ), structureSlide, SLOT( changeTable( const QString& ) ) );
}

dataWindow::~dataWindow( )
{

}

void dataWindow::resizeEvent( QResizeEvent* event )
{
    windowStack->setGeometry( listView->width(), 24 , this->width( ) - 
listView->width(), this->height( ) - 24 );
    listView->setGeometry( 0, 0, 200, this->height( ) );
}


LSQLstaticDataTable.h


#ifndef LSQLSTATICDATATABLE_H
#define LSQLSTATICDATATABLE_H

#include <qtable.h>
#include <qwidget.h>
#include <qsqlquery.h>
#include <qstring.h>
#include "LSQLdbConnection.h"

class staticDataTable : public QTable
{
        public:
    staticDataTable( QWidget* parent=0, const char* name=0, 
dbConnection* passDB=0 );
    ~staticDataTable( );
            void buildTable( );
            void setCurrentQuery( QString* );
            int getRowSize( );

        private:
                QSqlQuery* currentQuery;
                dbConnection* localDB;
};

#endif


LSQLstaticDataTable.cpp:


#include "LSQLstaticDataTable.h"

staticDataTable::staticDataTable( QWidget* parentWidget=0, const char* 
name=0, dbConnection* passDB=0 ) : QTable( parentWidget, name )
{
        localDB = passDB;
}

staticDataTable::~staticDataTable()
{

}

void staticDataTable::buildTable( )
{
        if( currentQuery->isActive() )
        {
                this->setNumCols( staticDataTable::getRowSize( ) );
                this->setNumRows( currentQuery->size() );

                this->setFocusStyle( QTable::FollowStyle );
                this->setSelectionMode( QTable::SingleRow );

                int i = 0;

                while( currentQuery->next() )
                {
                        int j;

                        for( j = 0; j < staticDataTable::getRowSize( ); 
j++ )
                        {
                                this->setText( i, j, 
currentQuery->value( j ).toString() );
                        }

                        i++;
                }

                for( i = 0; i < staticDataTable::getRowSize( ); i++ )
                {
                        this->setColumnReadOnly( i, true );

        this->adjustColumn( i );
                }
        }
        else
        {
                qDebug( "Failed to create database variable query " );
                qWarning( "Failed to open sales database: " + 
localDB->getDriverError() );
                qWarning( localDB->getDatabaseError() );
        }
}

void staticDataTable::setCurrentQuery( QString* passString )
{
        currentQuery = new QSqlQuery( QConstString( 
passString->unicode(), passString->length() ).string() );
}

int staticDataTable::getRowSize( )
{
        int i = 0;
        currentQuery->first();

        while( currentQuery->next() )
        {
                i++;
        }

        return i;
}


Thanks for any help!

--
 [ signature omitted ]

Message 3 in thread

Subject: Re: Linking errors
From: destr0 <joellist@xxxxxxxxxxxxxxxx>
Date: Wed, 04 Sep 2002 13:25:42 -0500
Cc: qt-interest@xxxxxxxxxxxxx
Reply-to: joellist@xxxxxxxxxxxxxxxx
To: unlisted-recipients:; (no To-header on input)

Smith, William R wrote:

>Why don't you try actually linking in the object file where staticDataTable
>is defined to define the reference?
>
Ahhh yes...

I love it when I have errors like this.  This way I can feel like a 
complete ass, instead of just feeling like a partial ass.  I've been 
trying to figure this out for a day.

Qt-interest Archive, September 2002Linking errors

Qt-interest Archive, September 2002
Linking errors