Undefined reference error while compiling Qt hello world program - c++

Question

I am trying to compile a Qt hello world program. I am using Qt 5.2.0 on Windows 64 bit.
This is my code
#include <QCoreApplication>
#include <QDebug>
int main(int argc, char *argv[])
{
QCoreApplication a(argc, argv);
qDebug() << "Hello world";
return a.exec();
}
When i run the application i get the following run time errors:
mingw32-make[1]: Entering directory 'C:/Users/test/qt_creator_projects/build-QtTest- TestLocal_PC-Debug'
g++ -c -pipe -fno-keep-inline-dllexport -g -frtti -Wall -Wextra -fexceptions -mthreads -DUNICODE -DQT_QML_DEBUG -DQT_DECLARATIVE_DEBUG -DQT_CORE_LIB -I..\QtTest -
I"D:\Qt\5.2.0\msvc2012_64\include" -I"D:\Qt\5.2.0\msvc2012_64\include\QtCore" -I"debug" -
I"." -I"D:\Qt\5.2.0\msvc2012_64\mkspecs\win32-g++" -o debug\main.o ..\QtTest\main.cpp
g++ -Wl,-subsystem,console -mthreads -o debug\QtTest.exe debug/main.o -
LD:\Qt\5.2.0\msvc2012_64\lib -lQt5Cored
debug/main.o: In function `main':
C:\Users\test\qt_creator_projects\build-QtTest-TestLocal_PC-
Debug/../QtTest/main.cpp:5: undefined reference to `_imp___ZN16QCoreApplicationC1ERiPPci'
C:\Users\test\qt_creator_projects\build-QtTest-TestLocal_PC- Debug/../QtTest/main.cpp:7: undefined reference to `_imp___ZN16QCoreApplication4execEv'
Makefile.Debug:77: recipe for target 'debug\QtTest.exe' failed
C:\Users\test\qt_creator_projects\build-QtTest-TestLocal_PC-
Debug/../QtTest/main.cpp:7: undefined reference to `_imp___ZN16QCoreApplicationD1Ev'
mingw32-make[1]: Leaving directory 'C:/Users/test/qt_creator_projects/build-QtTest- TestLocal_PC-Debug'
Makefile:34: recipe for target 'debug' failed
C:\Users\test\qt_creator_projects\build-QtTest-TestLocal_PC-Debug/../QtTest/main.cpp:7: undefined reference to `_imp___ZN16QCoreApplicationD1Ev'
collect2.exe: error: ld returned 1 exit status
mingw32-make[1]: *** [debug\QtTest.exe] Error 1
mingw32-make: *** [debug] Error 2
16:37:34: The process "D:\pen drive data\MinGW\bin\mingw32-make.exe" exited with code 2.
Error while building/deploying project QtTest (kit: TestLocal PC)
When executing step 'Make'
.pro file
QT += core
QT -= gui
TARGET = QtTest
CONFIG += console
CONFIG -= app_bundle
TEMPLATE = app
SOURCES += main.cpp
I want to use Qt with MinGW .I am currently using Qt creatore for 64 bit Visual Studio 2012 compiler. Since 64 bit MinGW is not available in the downloads for 5.2.0
Can someone help me solve these reference errors?

Answer 1

Why would you download a VS2012 version of Qt if you don't have, well, VS2012?
Download a version that matches the exact compiler you have. If there is none, download the sources and compile it yourself.
If you want to avoid the complications of self-compilation, then VS2012 Express is perfectly adequate to develop with Qt. It's the same compiler as the paid-for versions, and if you develop using Qt Creator, then you really don't care for whatever limitations the express edition IDE might have. It works great.
Another possibility is to use the mingw build of Qt. During setup, you can enable the installation of the MinGW 4.8.0 toolchain. This gives you a complete development environment, with the IDE, the Qt headers and binaries, and a toolchain.