[Techtalk] Can't get there from here

[Kathryn Hogg]

> I am quickly getting the hang of this coding thing, but I feel really
> dopey when trying to get a simple KDE program to compile.  There it is
> below, and below it is the output from the compiler.  I just can't
> figure out what I'm doing, let alone figuring out what I'm doing wrong.
>  I guess there is more to compiling QT/KDE than a simple command line.
> Could anyone offer me a push in the right direction to help me compile
> my first gui program?
>
> legojenn
>
>
> #include <qapplication.h>
> #include <qpushbutton.h>
>
> int main( int argc, char **argv )
> {
>    QApplication a( argc, argv );
>
>    QPushButton *hello=new QPushButton( "Hello world!", 0 );
>    hello->resize( 100, 30 );
>
>    QObject::connect( hello, SIGNAL(clicked()), &a, SLOT(quit()) );
>
>    a.setMainWidget( hello );
>    hello->show();
>
>    return a.exec();
> }
>
> ---
>
> jsd at pinky:~$ g++ -o test.exe test.cpp
> /tmp/cczyGE3r.o: In function `main':
> /tmp/cczyGE3r.o(.text+0x18): undefined reference to
> `QApplication::QApplication(int &, char **)'
> /tmp/cczyGE3r.o(.text+0x44): undefined reference to
> `QString::QString(char const *)'
> /tmp/cczyGE3r.o(.text+0x57): undefined reference to
> `QPushButton::QPushButton(QString const &, QWidget *, char const *)'
> /tmp/cczyGE3r.o(.text+0xd4): undefined reference to
> `QObject::connect(QObject const *, char const *, QObject const *, char
> const *)'
> /tmp/cczyGE3r.o(.text+0xe7): undefined reference to
> `QApplication::setMainWidget(QWidget *)'
> /tmp/cczyGE3r.o(.text+0x10f): undefined reference to
> `QApplication::exec(void)'
> /tmp/cczyGE3r.o(.text+0x122): undefined reference to
> `QApplication::~QApplication(void)'
> /tmp/cczyGE3r.o(.text+0x17f): undefined reference to
> `QApplication::~QApplication(void)'
> /tmp/cczyGE3r.o: In function `QString::~QString(void)':
> /tmp/cczyGE3r.o(.gnu.linkonce.t._._7QString+0x26): undefined reference
> to `QString::shared_null'
> /tmp/cczyGE3r.o(.gnu.linkonce.t._._7QString+0x2e): undefined reference
> to `QString::shared_null'
> /tmp/cczyGE3r.o(.gnu.linkonce.t._._7QString+0x3d): undefined reference
> to `QStringData::deleteSelf(void)'
> collect2: ld returned 1 exit status
> jsd at pinky:~$
>
>
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--
Kathryn