[QT] what package should i add to be able to compile qt stuff ?

jabka · 06-10-2007, 10:03 AM

hello,..
i would like to start learning qt so i have installed

Code:

libqt3-headers
qt3-doc
libqt3-mt-dev

im running debian etch amd64 and i would like to start learning qt programming.
my preferred IDEs is anjuta and vim.

then i went to anjuta and pasted this:

Code:

/****************************************************************
**
** Qt tutorial 1
**
****************************************************************/

#include "/usr/include/qt3/qapplication.h"
#include "/usr/include/qt3/qpushbutton.h"

int main( int argc, char **argv )
{
    QApplication a( argc, argv );

    QPushButton hello( "Hello world!", 0 );
    hello.resize( 100, 30 );

    a.setMainWidget( &hello );
    hello.show();
    return a.exec();
}

tried to compile (all went ok )..
then in make i got errors ..
so i guesed that im duing some thing worng spesific in anjuta so i went to the source dir.

Code:

qmake -project
qmake
make

but make complains about :

Code:

... ( i removed alot of them) ..
moc_qbutton.o:(.rodata._ZTV7QButton[vtable for QButton]+0x430): undefined refere                                                                                                                                 nce to `QPaintDevice::fontMet(QFont*, int, char const*, int) const'
moc_qbutton.o:(.rodata._ZTV7QButton[vtable for QButton]+0x438): undefined refere                                                                                                                                 nce to `QPaintDevice::fontInf(QFont*, int) const'
collect2: ld returned 1 exit status
make: *** [qt] Error 1

also make started with :
g++ -o qt qt_hello.o moc_qapplication.o moc_qpushbutton.o moc_qdesktopwidget.o moc_qtranslator.o moc_qwidget.o moc_qobject.o moc_qbutton.o -L/usr/X11R6/lib -lXext -lX11 -lm -lpthread

what more packages should i install to be able compile any qt stuff ?
or am i doing wrong ?

thnx in advance ..

Nylex · 06-10-2007, 10:14 AM

This maybe a stupid question, but do you actually have the Qt library package installed? You need both the headers and the library files themselves (because those contain the compiled code of the functions and stuff).

jabka · 06-10-2007, 10:54 AM

this is what im not sure since in i read the package description and undertood that i should install libqt3-compat-dev but even after the installation it didn't compile

i add thous packages today.

Code:

libqt3-compat-headers
libqt3-mt-dev 
libqt3-mt
qt3-examples
qt3-qtconfig

same error ..

reddazz · 06-10-2007, 11:01 AM

I think you also need libqt3 and libqt3-dev to be installed.

Nylex · 06-10-2007, 11:07 AM

Minor thing: you should just be able to use "#include <header>", rather than having to put the entire path to the headers :/.

jabka · 06-10-2007, 11:09 AM

ok now it is going to some where ..

i have libqt3-mt and libqt3-dev but when i try check for libqt3 it says it isn't exist ..

Quote:

acerium:/home/jabka# apt-get install libqt3
Reading package lists... Done
Building dependency tree... Done
Package libqt3 is not available, but is referred to by another package.
This may mean that the package is missing, has been obsoleted, or
is only available from another source
However the following packages replace it:
libqt3-mt

Nylex · 06-10-2007, 11:28 AM

I've never used apt-get, but it should have a feature to search for packages. Of course, you could just use Synaptic and search there.

jabka · 06-10-2007, 11:29 AM

Quote:

Originally Posted by Nylex

Minor thing: you should just be able to use "#include <header>", rather than having to put the entire path to the headers :/.

i did it sine i was not sure if anjuta (the IDE) will find them (it didn't).

now i guess that i need to send some parameter to g++ when linking

about the package search since i don't know what to search im missing something

Nylex · 06-12-2007, 11:56 AM

Search for packages with qt in the name and see what else is there.

rstewart · 06-12-2007, 04:35 PM

Hello,

What does your make file look like? Are you running the moc pre-compiler against your files?

I have seen these types of errors when adding new source into a project and forgetting to run the moc pre-compiler step...

Ciao!