compilation error

[jjbabu]

Talk2amulya,
i added those .prf files to my makefile and i compiled that application still it is giving same error. what might be the problem?

Actualy i tried to give reply directly with ur last post but i am not able to write on the site,so i created new thread.plz excuse me.

thank u.

[spirit]

did you try to install Qt in another directory/drive etc?

[jjbabu]

just now i am trying to do that.i will let u know after installing qt on another drive Spirit.

thank u.

[jjbabu]

Spirit,
Even after installing on different directory is also creating same problem.

tmp/obj/debug_shared/hello.o(.text+0x158): In function `Z5qMainiPPc':
F:/Qt/4.4.3/hello/hello.cpp:5: undefined reference to `_imp___ZN12QApplicationC1
ERiPPci'
tmp/obj/debug_shared/hello.o(.text+0x1ec):F:/Qt/4.4.3/hello/hello.cpp:6: undefin
ed reference to `_imp___ZN6QLabelC1ERK7QStringP7QWidget6QFlagsIN2Qt10WindowTypeE
E'
tmp/obj/debug_shared/hello.o(.text+0x2b2):F:/Qt/4.4.3/hello/hello.cpp:8: undefin
ed reference to `_imp___ZN12QApplication4execEv'
tmp/obj/debug_shared/hello.o(.text+0x2cf):F:/Qt/4.4.3/hello/hello.cpp:8: undefin
ed reference to `QApplication::~QApplication()'
tmp/obj/debug_shared/hello.o(.text+0x2fe):F:/Qt/4.4.3/hello/hello.cpp:8: undefin
ed reference to `QApplication::~QApplication()'
tmp/obj/debug_shared/hello.o(.text$_ZN7QStringD1Ev[QString::~QString()]+0x20): I
n function `ZSt3minIjERKT_S2_S2_':
F:/Qt/4.4.3/hello/../include/QtCore/../../src/corelib/tools/qstring.h: undefined
 reference to `_imp___ZN7QString4freeEPNS_4DataE'
tmp/obj/debug_shared/hello.o(.text$_ZN7QStringC1EPKc[QString::QString(char const
*)]+0x19):F:/Qt/4.4.3/hello/../include/QtCore/../../src/corelib/tools/qstring.h:
 undefined reference to `_imp___ZN7QString16fromAscii_helperEPKci'
/mingw/lib/libmingw32.a(main.o)(.text+0x106):main.c: undefined reference to `Win
Main@16'
collect2: ld returned 1 exit status
mingw32-make[1]: *** [debug\hello.exe] Error 1
mingw32-make[1]: Leaving directory `F:/Qt/4.4.3/hello'
mingw32-make: *** [debug-all] Error 2

tmp/obj/debug_shared/hello.o(.text+0x158): In function `Z5qMainiPPc':
F:/Qt/4.4.3/hello/hello.cpp:5: undefined reference to `_imp___ZN12QApplicationC1
ERiPPci'
tmp/obj/debug_shared/hello.o(.text+0x1ec):F:/Qt/4.4.3/hello/hello.cpp:6: undefin
ed reference to `_imp___ZN6QLabelC1ERK7QStringP7QWidget6QFlagsIN2Qt10WindowTypeE
E'
tmp/obj/debug_shared/hello.o(.text+0x2b2):F:/Qt/4.4.3/hello/hello.cpp:8: undefin
ed reference to `_imp___ZN12QApplication4execEv'
tmp/obj/debug_shared/hello.o(.text+0x2cf):F:/Qt/4.4.3/hello/hello.cpp:8: undefin
ed reference to `QApplication::~QApplication()'
tmp/obj/debug_shared/hello.o(.text+0x2fe):F:/Qt/4.4.3/hello/hello.cpp:8: undefin
ed reference to `QApplication::~QApplication()'
tmp/obj/debug_shared/hello.o(.text$_ZN7QStringD1Ev[QString::~QString()]+0x20): I
n function `ZSt3minIjERKT_S2_S2_':
F:/Qt/4.4.3/hello/../include/QtCore/../../src/corelib/tools/qstring.h: undefined
 reference to `_imp___ZN7QString4freeEPNS_4DataE'
tmp/obj/debug_shared/hello.o(.text$_ZN7QStringC1EPKc[QString::QString(char const
*)]+0x19):F:/Qt/4.4.3/hello/../include/QtCore/../../src/corelib/tools/qstring.h:
 undefined reference to `_imp___ZN7QString16fromAscii_helperEPKci'
/mingw/lib/libmingw32.a(main.o)(.text+0x106):main.c: undefined reference to `Win
Main@16'
collect2: ld returned 1 exit status
mingw32-make[1]: *** [debug\hello.exe] Error 1
mingw32-make[1]: Leaving directory `F:/Qt/4.4.3/hello'
mingw32-make: *** [debug-all] Error 2

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this is the problem,what should i do?

[spirit]

did you try to build Qt's examples?

[jjbabu]

Spirit,
I am trying to compile this simple code:
#include <QApplication>
#include <QLabel>
int main(int argc, char *argv[])
{
QApplication app(argc, argv);
QLabel *label = new QLabel("Hello Qt!");
label->show();
return app.exec();
}
this simple application is not compiling then how can i expect examples will compile properly.

[spirit]

so, I would like to know: did you build Qt manually or installed already built Qt?

[jjbabu]

I have not understood ur question properly.what i did is i uninstalled previously installed qt and again i installed qt in "F" directory by specifying MinGw path in sam "F" directory only.as i am windows user simply followed the instructions which i got after double clicking the qt software.

[spirit]

got it. so, try to build Qt by yourself using Qt's configure tool.

[jjbabu]

how to do that?
Can u specify steps involved on that configuration?

[spirit]

read this and also INSTALL file in QTDIR.