Undefined reference to qDebug

ayush_mistral

Hi,

I want to use test a QT Desktop GUI application project using CppUnit Framework.
When I included the CppUnit Library path and the headers in the .pro file of the QT Project and build the project I am getting compiler error messages as "undefined reference to qDebug" . For example like this :
/cmUdp.cpp:72: error: undefined reference to `QDebug::~QDebug()'.
I included the Qdebug header in the source file,(#include <QDebug>) but still showing the error.

Please help me to know what may be the probable cause of this error and what is the possible solution.

Thanks in advance
Ayush

jsulm

Did you add
QT += core
to your pro file as stated in the documentation?

ayush_mistral

@jsulm

Yes its already there in the .pro file.

jsulm

Was it working before adding CppUnit Library?
If so, can you post your pro file?

alogim

@ayush_mistral have you tried to:

Clean the project and
Run QMake and
Rebuild the project

in this order?

ayush_mistral

Yes it was building before adding the cppunit library and header in the .pro file.

Please find my .pro file as below.

Thanks
Ayush

#-------------------------------------------------

Project created by QtCreator 2016-01-22T17:45:53

#-------------------------------------------------

QT += core gui
QT += network

greaterThan(QT_MAJOR_VERSION, 4): QT += widgets

TARGET = cppunittest_gui
TEMPLATE = app

SOURCES += main.cpp
mainwindow.cpp
cmTcp.cpp
cmUdp.cpp
CommunicationModule.cpp
CommunicationModuleTest.cpp
CmTcpTest.cpp
CmUdpTest.cpp

HEADERS += mainwindow.h
cmCommon.h
cmTcp.h
cmUdp.h
CommunicationModule.h
CommunicationModuleTest.h
CmTcpTest.h
CmUdpTest.h
testconfig.h

mistTypes.h

FORMS += mainwindow.ui

win32:CONFIG(release, debug|release): LIBS += -L$$PWD/../../../../../usr/lib/release/ -lgtest
else:win32:CONFIG(debug, debug|release): LIBS += -L$$PWD/../../../../../usr/lib/debug/ -lgtest
else:unix: LIBS += -L$$PWD/../../../../../usr/lib/ -lgtest

INCLUDEPATH += $$PWD/../../../../../usr/include/gtest
DEPENDPATH += $$PWD/../../../../../usr/include/gtest

win32-g++:CONFIG(release, debug|release): PRE_TARGETDEPS += $$PWD/../../../../../usr/lib/release/libgtest.a
else:win32-g++:CONFIG(debug, debug|release): PRE_TARGETDEPS += $$PWD/../../../../../usr/lib/debug/libgtest.a
else:win32:!win32-g++:CONFIG(release, debug|release): PRE_TARGETDEPS += $$PWD/../../../../../usr/lib/release/gtest.lib
else:win32:!win32-g++:CONFIG(debug, debug|release): PRE_TARGETDEPS += $$PWD/../../../../../usr/lib/debug/gtest.lib
else:unix: PRE_TARGETDEPS += $$PWD/../../../../../usr/lib/libgtest.a

win32:CONFIG(release, debug|release): LIBS += -L$$PWD/../../../../../usr/lib/x86_64-linux-gnu/release/ -lcppunit
else:win32:CONFIG(debug, debug|release): LIBS += -L$$PWD/../../../../../usr/lib/x86_64-linux-gnu/debug/ -lcppunit
else:unix: LIBS += -L$$PWD/../../../../../usr/lib/x86_64-linux-gnu/ -lcppunit

INCLUDEPATH += $$PWD/../../../../../usr/include/cppunit
DEPENDPATH += $$PWD/../../../../../usr/include/cppunit

win32-g++:CONFIG(release, debug|release): PRE_TARGETDEPS += $$PWD/../../../../../usr/lib/x86_64-linux-gnu/release/libcppunit.a
else:win32-g++:CONFIG(debug, debug|release): PRE_TARGETDEPS += $$PWD/../../../../../usr/lib/x86_64-linux-gnu/debug/libcppunit.a
else:win32:!win32-g++:CONFIG(release, debug|release): PRE_TARGETDEPS += $$PWD/../../../../../usr/lib/x86_64-linux-gnu/release/cppunit.lib
else:win32:!win32-g++:CONFIG(debug, debug|release): PRE_TARGETDEPS += $$PWD/../../../../../usr/lib/x86_64-linux-gnu/debug/cppunit.lib
else:unix: PRE_TARGETDEPS += $$PWD/../../../../../usr/lib/x86_64-linux-gnu/libcppunit.a

ttuna

How did you use qDebug()? Can you post an example?

ayush_mistral

@ttuna I used qdebug() for printing debug messages like below mentioned example

qDebug() << "Socket Bounded";

Ayush

SGaist

Hi,

Maybe a silly question but did you #include <QtDebug> in your cpp file ?

kshegunov

@ayush_mistral
Hello,
Do you mind putting the whole compilation window content somewhere for us to see (it may be long so perhaps uploading it to a site and linking it here is a good idea)?
In the meantime, could you try linking the CppUnit Framework dynamically and let us know how it goes?

Kind regards.

ayush_mistral

@SGaist

Hi,

I did #include <QtDebug> in my .cpp file but still its showing the same error as
/QT Projects/cppunittest_gui/cmUdp.cpp:73: error: undefined reference to `QDebug::~QDebug()'

Thanks and Regards
Ayush

ayush_mistral

@kshegunov

Hi,

I tried to link the cppunit library dynamically but still getting the same error as follows

cmUdp.o: In function cCmUdp::cmUdpSocketInit(CM_UDPSOCKET_HANDLE*, HA_UDP_PARAM*)': /home/mistral/Desktop/QT Projects/cppunittest_gui/cmUdp.cpp:73: undefined reference to QDebug::~QDebug()'
/home/mistral/Desktop/QT Projects/cppunittest_gui/cmUdp.cpp:73: undefined reference to QDebug::~QDebug()' cmUdp.o: In function cCmUdp::cmUdpSocketRead(CM_UDPSOCKET_HANDLE*, char*, unsigned int)':
/home/mistral/Desktop/QT Projects/cppunittest_gui/cmUdp.cpp:128: undefined reference to QDebug::~QDebug()' /home/mistral/Desktop/QT Projects/cppunittest_gui/cmUdp.cpp:128: undefined reference to QDebug::~QDebug()'
cmUdp.o: In function cCmUdp::cmUdpSocketClose(CM_UDPSOCKET_HANDLE*)': /home/mistral/Desktop/QT Projects/cppunittest_gui/cmUdp.cpp:279: undefined reference to QDebug::~QDebug()'
cmUdp.o:/home/mistral/Desktop/QT Projects/cppunittest_gui/cmUdp.cpp:279: more undefined references to `QDebug::~QDebug()' follow
collect2: error: ld returned 1 exit status
make: *** [cppunittest_gui] Error 1
11:03:37: The process "/usr/bin/make" exited with code 2.
Error while building/deploying project cppunittest_gui (kit: Desktop Qt 5.5.1 GCC 64bit)
When executing step "Make"
11:03:37: Elapsed time: 00:16.

When I include the cppunit as a static library I am getting the output as follows

cmUdp.o: In function cCmUdp::cmUdpSocketInit(CM_UDPSOCKET_HANDLE*, HA_UDP_PARAM*)': /home/mistral/Desktop/QT Projects/cppunittest_gui/cmUdp.cpp:73: undefined reference to QDebug::~QDebug()'
/home/mistral/Desktop/QT Projects/cppunittest_gui/cmUdp.cpp:73: undefined reference to QDebug::~QDebug()' cmUdp.o: In function cCmUdp::cmUdpSocketRead(CM_UDPSOCKET_HANDLE*, char*, unsigned int)':
/home/mistral/Desktop/QT Projects/cppunittest_gui/cmUdp.cpp:128: undefined reference to QDebug::~QDebug()' /home/mistral/Desktop/QT Projects/cppunittest_gui/cmUdp.cpp:128: undefined reference to QDebug::~QDebug()'
cmUdp.o: In function cCmUdp::cmUdpSocketClose(CM_UDPSOCKET_HANDLE*)': /home/mistral/Desktop/QT Projects/cppunittest_gui/cmUdp.cpp:279: undefined reference to QDebug::~QDebug()'
cmUdp.o:/home/mistral/Desktop/QT Projects/cppunittest_gui/cmUdp.cpp:279: more undefined references to `QDebug::~QDebug()' follow
collect2: error: ld returned 1 exit status
make: *** [cppunittest_gui] Error 1
11:06:25: The process "/usr/bin/make" exited with code 2.
Error while building/deploying project cppunittest_gui (kit: Desktop Qt 5.5.1 GCC 64bit)
When executing step "Make"
11:06:25: Elapsed time: 00:16.

Thanks and Regards
Ayush

SGaist

The linking information is missing. That's needed in order to see whether the correct version of Qt is linked to your application.

eureka

I'm still at beginner's crawling stage ..
but I do spot a space in your path .. /QT Projects/
I've learned to purge all spaces in my projects under development .. e.g. /Qt_Projects/
May not be relevant to your problem but worth remembering.

kshegunov

@ayush_mistral
Hello,
Getting the same error would mean that your problem shouldn't be related to the library itself, however I second @SGaist's note, you've not provided the linking step, only the errors. I'd suggest finding where the linker runs and allow for us to see what's done at that particular point.

Kind regards.

ayush_mistral

@kshegunov

Hi,

Regarding the version , I am using version 5.5.1 of Qt and cpp unit version is 1.12.1
Regarding the linking step please find the complete compiler output as mentioned below.

11:16:28: Running steps for project cppunittest_gui...
11:16:28: Starting: "/usr/bin/make" clean
rm -f moc_mainwindow.cpp moc_cmTcp.cpp moc_cmUdp.cpp moc_simserver.cpp
rm -f ui_mainwindow.h
rm -f main.o mainwindow.o cmTcp.o cmUdp.o CommunicationModule.o CommunicationModuleTest.o CmTcpTest.o CmUdpTest.o simserver.o moc_mainwindow.o moc_cmTcp.o moc_cmUdp.o moc_simserver.o
rm -f ~ core .core
11:16:28: The process "/usr/bin/make" exited normally.
11:16:28: Configuration unchanged, skipping qmake step.
11:16:28: Starting: "/usr/bin/make"
/home/mistral/Qt/5.5/gcc_64/bin/uic mainwindow.ui -o ui_mainwindow.h
g++ -c -pipe -g -Wall -W -D_REENTRANT -fPIC -DQT_QML_DEBUG -DQT_WIDGETS_LIB -DQT_GUI_LIB -DQT_NETWORK_LIB -DQT_CORE_LIB -I. -I/usr/include/gtest -I/usr/include/cppunit -I/usr/include/cppunit -I../../../Qt/5.5/gcc_64/include -I../../../Qt/5.5/gcc_64/include/QtWidgets -I../../../Qt/5.5/gcc_64/include/QtGui -I../../../Qt/5.5/gcc_64/include/QtNetwork -I../../../Qt/5.5/gcc_64/include/QtCore -I. -I. -I../../../Qt/5.5/gcc_64/mkspecs/linux-g++ -o main.o main.cpp
main.cpp: In function 'int main(int, char)':
main.cpp:18:20: warning: ignoring return value of 'int testing::UnitTest::Run()', declared with attribute warn_unused_result [-Wunused-result]
RUN_ALL_TESTS();
^
g++ -c -pipe -g -Wall -W -D_REENTRANT -fPIC -DQT_QML_DEBUG -DQT_WIDGETS_LIB -DQT_GUI_LIB -DQT_NETWORK_LIB -DQT_CORE_LIB -I. -I/usr/include/gtest -I/usr/include/cppunit -I/usr/include/cppunit -I../../../Qt/5.5/gcc_64/include -I../../../Qt/5.5/gcc_64/include/QtWidgets -I../../../Qt/5.5/gcc_64/include/QtGui -I../../../Qt/5.5/gcc_64/include/QtNetwork -I../../../Qt/5.5/gcc_64/include/QtCore -I. -I. -I../../../Qt/5.5/gcc_64/mkspecs/linux-g++ -o mainwindow.o mainwindow.cpp
g++ -c -pipe -g -Wall -W -D_REENTRANT -fPIC -DQT_QML_DEBUG -DQT_WIDGETS_LIB -DQT_GUI_LIB -DQT_NETWORK_LIB -DQT_CORE_LIB -I. -I/usr/include/gtest -I/usr/include/cppunit -I/usr/include/cppunit -I../../../Qt/5.5/gcc_64/include -I../../../Qt/5.5/gcc_64/include/QtWidgets -I../../../Qt/5.5/gcc_64/include/QtGui -I../../../Qt/5.5/gcc_64/include/QtNetwork -I../../../Qt/5.5/gcc_64/include/QtCore -I. -I. -I../../../Qt/5.5/gcc_64/mkspecs/linux-g++ -o cmTcp.o cmTcp.cpp
g++ -c -pipe -g -Wall -W -D_REENTRANT -fPIC -DQT_QML_DEBUG -DQT_WIDGETS_LIB -DQT_GUI_LIB -DQT_NETWORK_LIB -DQT_CORE_LIB -I. -I/usr/include/gtest -I/usr/include/cppunit -I/usr/include/cppunit -I../../../Qt/5.5/gcc_64/include -I../../../Qt/5.5/gcc_64/include/QtWidgets -I../../../Qt/5.5/gcc_64/include/QtGui -I../../../Qt/5.5/gcc_64/include/QtNetwork -I../../../Qt/5.5/gcc_64/include/QtCore -I. -I. -I../../../Qt/5.5/gcc_64/mkspecs/linux-g++ -o cmUdp.o cmUdp.cpp
cmUdp.cpp: In member function 'CM_EN_RETURN cCmUdp::cmUdpSocketWrite(CM_UDPSOCKET_HANDLE*, SINT8*, quint32)':
cmUdp.cpp:195:12: warning: variable 's32BytesRead' set but not used [-Wunused-but-set-variable]
qint32 s32BytesRead;
^
cmUdp.cpp:219:60: warning: 'ps8RecvBuffer' may be used uninitialized in this function [-Wmaybe-uninitialized]
&clientPort);
^
g++ -c -pipe -g -Wall -W -D_REENTRANT -fPIC -DQT_QML_DEBUG -DQT_WIDGETS_LIB -DQT_GUI_LIB -DQT_NETWORK_LIB -DQT_CORE_LIB -I. -I/usr/include/gtest -I/usr/include/cppunit -I/usr/include/cppunit -I../../../Qt/5.5/gcc_64/include -I../../../Qt/5.5/gcc_64/include/QtWidgets -I../../../Qt/5.5/gcc_64/include/QtGui -I../../../Qt/5.5/gcc_64/include/QtNetwork -I../../../Qt/5.5/gcc_64/include/QtCore -I. -I. -I../../../Qt/5.5/gcc_64/mkspecs/linux-g++ -o CommunicationModule.o CommunicationModule.cpp
g++ -c -pipe -g -Wall -W -D_REENTRANT -fPIC -DQT_QML_DEBUG -DQT_WIDGETS_LIB -DQT_GUI_LIB -DQT_NETWORK_LIB -DQT_CORE_LIB -I. -I/usr/include/gtest -I/usr/include/cppunit -I/usr/include/cppunit -I../../../Qt/5.5/gcc_64/include -I../../../Qt/5.5/gcc_64/include/QtWidgets -I../../../Qt/5.5/gcc_64/include/QtGui -I../../../Qt/5.5/gcc_64/include/QtNetwork -I../../../Qt/5.5/gcc_64/include/QtCore -I. -I. -I../../../Qt/5.5/gcc_64/mkspecs/linux-g++ -o CommunicationModuleTest.o CommunicationModuleTest.cpp
g++ -c -pipe -g -Wall -W -D_REENTRANT -fPIC -DQT_QML_DEBUG -DQT_WIDGETS_LIB -DQT_GUI_LIB -DQT_NETWORK_LIB -DQT_CORE_LIB -I. -I/usr/include/gtest -I/usr/include/cppunit -I/usr/include/cppunit -I../../../Qt/5.5/gcc_64/include -I../../../Qt/5.5/gcc_64/include/QtWidgets -I../../../Qt/5.5/gcc_64/include/QtGui -I../../../Qt/5.5/gcc_64/include/QtNetwork -I../../../Qt/5.5/gcc_64/include/QtCore -I. -I. -I../../../Qt/5.5/gcc_64/mkspecs/linux-g++ -o CmTcpTest.o CmTcpTest.cpp
g++ -c -pipe -g -Wall -W -D_REENTRANT -fPIC -DQT_QML_DEBUG -DQT_WIDGETS_LIB -DQT_GUI_LIB -DQT_NETWORK_LIB -DQT_CORE_LIB -I. -I/usr/include/gtest -I/usr/include/cppunit -I/usr/include/cppunit -I../../../Qt/5.5/gcc_64/include -I../../../Qt/5.5/gcc_64/include/QtWidgets -I../../../Qt/5.5/gcc_64/include/QtGui -I../../../Qt/5.5/gcc_64/include/QtNetwork -I../../../Qt/5.5/gcc_64/include/QtCore -I. -I. -I../../../Qt/5.5/gcc_64/mkspecs/linux-g++ -o CmUdpTest.o CmUdpTest.cpp
g++ -c -pipe -g -Wall -W -D_REENTRANT -fPIC -DQT_QML_DEBUG -DQT_WIDGETS_LIB -DQT_GUI_LIB -DQT_NETWORK_LIB -DQT_CORE_LIB -I. -I/usr/include/gtest -I/usr/include/cppunit -I/usr/include/cppunit -I../../../Qt/5.5/gcc_64/include -I../../../Qt/5.5/gcc_64/include/QtWidgets -I../../../Qt/5.5/gcc_64/include/QtGui -I../../../Qt/5.5/gcc_64/include/QtNetwork -I../../../Qt/5.5/gcc_64/include/QtCore -I. -I. -I../../../Qt/5.5/gcc_64/mkspecs/linux-g++ -o simserver.o simserver.cpp
/home/mistral/Qt/5.5/gcc_64/bin/moc -DQT_QML_DEBUG -DQT_WIDGETS_LIB -DQT_GUI_LIB -DQT_NETWORK_LIB -DQT_CORE_LIB -I/home/mistral/Qt/5.5/gcc_64/mkspecs/linux-g++ -I'/home/mistral/Desktop/QT Projects/cppunittest_gui' -I/usr/include/gtest -I/usr/include/cppunit -I/usr/include/cppunit -I/home/mistral/Qt/5.5/gcc_64/include -I/home/mistral/Qt/5.5/gcc_64/include/QtWidgets -I/home/mistral/Qt/5.5/gcc_64/include/QtGui -I/home/mistral/Qt/5.5/gcc_64/include/QtNetwork -I/home/mistral/Qt/5.5/gcc_64/include/QtCore mainwindow.h -o moc_mainwindow.cpp
g++ -c -pipe -g -Wall -W -D_REENTRANT -fPIC -DQT_QML_DEBUG -DQT_WIDGETS_LIB -DQT_GUI_LIB -DQT_NETWORK_LIB -DQT_CORE_LIB -I. -I/usr/include/gtest -I/usr/include/cppunit -I/usr/include/cppunit -I../../../Qt/5.5/gcc_64/include -I../../../Qt/5.5/gcc_64/include/QtWidgets -I../../../Qt/5.5/gcc_64/include/QtGui -I../../../Qt/5.5/gcc_64/include/QtNetwork -I../../../Qt/5.5/gcc_64/include/QtCore -I. -I. -I../../../Qt/5.5/gcc_64/mkspecs/linux-g++ -o moc_mainwindow.o moc_mainwindow.cpp
/home/mistral/Qt/5.5/gcc_64/bin/moc -DQT_QML_DEBUG -DQT_WIDGETS_LIB -DQT_GUI_LIB -DQT_NETWORK_LIB -DQT_CORE_LIB -I/home/mistral/Qt/5.5/gcc_64/mkspecs/linux-g++ -I'/home/mistral/Desktop/QT Projects/cppunittest_gui' -I/usr/include/gtest -I/usr/include/cppunit -I/usr/include/cppunit -I/home/mistral/Qt/5.5/gcc_64/include -I/home/mistral/Qt/5.5/gcc_64/include/QtWidgets -I/home/mistral/Qt/5.5/gcc_64/include/QtGui -I/home/mistral/Qt/5.5/gcc_64/include/QtNetwork -I/home/mistral/Qt/5.5/gcc_64/include/QtCore cmTcp.h -o moc_cmTcp.cpp
g++ -c -pipe -g -Wall -W -D_REENTRANT -fPIC -DQT_QML_DEBUG -DQT_WIDGETS_LIB -DQT_GUI_LIB -DQT_NETWORK_LIB -DQT_CORE_LIB -I. -I/usr/include/gtest -I/usr/include/cppunit -I/usr/include/cppunit -I../../../Qt/5.5/gcc_64/include -I../../../Qt/5.5/gcc_64/include/QtWidgets -I../../../Qt/5.5/gcc_64/include/QtGui -I../../../Qt/5.5/gcc_64/include/QtNetwork -I../../../Qt/5.5/gcc_64/include/QtCore -I. -I. -I../../../Qt/5.5/gcc_64/mkspecs/linux-g++ -o moc_cmTcp.o moc_cmTcp.cpp
/home/mistral/Qt/5.5/gcc_64/bin/moc -DQT_QML_DEBUG -DQT_WIDGETS_LIB -DQT_GUI_LIB -DQT_NETWORK_LIB -DQT_CORE_LIB -I/home/mistral/Qt/5.5/gcc_64/mkspecs/linux-g++ -I'/home/mistral/Desktop/QT Projects/cppunittest_gui' -I/usr/include/gtest -I/usr/include/cppunit -I/usr/include/cppunit -I/home/mistral/Qt/5.5/gcc_64/include -I/home/mistral/Qt/5.5/gcc_64/include/QtWidgets -I/home/mistral/Qt/5.5/gcc_64/include/QtGui -I/home/mistral/Qt/5.5/gcc_64/include/QtNetwork -I/home/mistral/Qt/5.5/gcc_64/include/QtCore cmUdp.h -o moc_cmUdp.cpp
g++ -c -pipe -g -Wall -W -D_REENTRANT -fPIC -DQT_QML_DEBUG -DQT_WIDGETS_LIB -DQT_GUI_LIB -DQT_NETWORK_LIB -DQT_CORE_LIB -I. -I/usr/include/gtest -I/usr/include/cppunit -I/usr/include/cppunit -I../../../Qt/5.5/gcc_64/include -I../../../Qt/5.5/gcc_64/include/QtWidgets -I../../../Qt/5.5/gcc_64/include/QtGui -I../../../Qt/5.5/gcc_64/include/QtNetwork -I../../../Qt/5.5/gcc_64/include/QtCore -I. -I. -I../../../Qt/5.5/gcc_64/mkspecs/linux-g++ -o moc_cmUdp.o moc_cmUdp.cpp
/home/mistral/Qt/5.5/gcc_64/bin/moc -DQT_QML_DEBUG -DQT_WIDGETS_LIB -DQT_GUI_LIB -DQT_NETWORK_LIB -DQT_CORE_LIB -I/home/mistral/Qt/5.5/gcc_64/mkspecs/linux-g++ -I'/home/mistral/Desktop/QT Projects/cppunittest_gui' -I/usr/include/gtest -I/usr/include/cppunit -I/usr/include/cppunit -I/home/mistral/Qt/5.5/gcc_64/include -I/home/mistral/Qt/5.5/gcc_64/include/QtWidgets -I/home/mistral/Qt/5.5/gcc_64/include/QtGui -I/home/mistral/Qt/5.5/gcc_64/include/QtNetwork -I/home/mistral/Qt/5.5/gcc_64/include/QtCore simserver.h -o moc_simserver.cpp
g++ -c -pipe -g -Wall -W -D_REENTRANT -fPIC -DQT_QML_DEBUG -DQT_WIDGETS_LIB -DQT_GUI_LIB -DQT_NETWORK_LIB -DQT_CORE_LIB -I. -I/usr/include/gtest -I/usr/include/cppunit -I/usr/include/cppunit -I../../../Qt/5.5/gcc_64/include -I../../../Qt/5.5/gcc_64/include/QtWidgets -I../../../Qt/5.5/gcc_64/include/QtGui -I../../../Qt/5.5/gcc_64/include/QtNetwork -I../../../Qt/5.5/gcc_64/include/QtCore -I. -I. -I../../../Qt/5.5/gcc_64/mkspecs/linux-g++ -o moc_simserver.o moc_simserver.cpp
g++ -Wl,-rpath,/home/mistral/Qt/5.5/gcc_64 -Wl,-rpath,/home/mistral/Qt/5.5/gcc_64/lib -o cppunittest_gui main.o mainwindow.o cmTcp.o cmUdp.o CommunicationModule.o CommunicationModuleTest.o CmTcpTest.o CmUdpTest.o simserver.o moc_mainwindow.o moc_cmTcp.o moc_cmUdp.o moc_simserver.o -L/home/mistral/Desktop/QT\ Projects/cppunittest_gui/../../../../../usr/lib/ -lgtest -L/home/mistral/Desktop/QT\ Projects/cppunittest_gui/../../../../../usr/lib/x86_64-linux-gnu/ -lcppunit -L/home/mistral/Qt/5.5/gcc_64/lib -lQt5Widgets -L/usr/X11R6/lib64 -L/usr/lib/x86_64-linux-gnu -lQt5Gui -lQt5Network -lQt5Core -lGL -lpthread
cmUdp.o: In function cCmUdp::cmUdpSocketInit(CM_UDPSOCKET_HANDLE*, HA_UDP_PARAM*)': /home/mistral/Desktop/QT Projects/cppunittest_gui/cmUdp.cpp:73: undefined reference to QDebug::~QDebug()'
/home/mistral/Desktop/QT Projects/cppunittest_gui/cmUdp.cpp:73: undefined reference to QDebug::~QDebug()' cmUdp.o: In function cCmUdp::cmUdpSocketRead(CM_UDPSOCKET_HANDLE*, char*, unsigned int)':
/home/mistral/Desktop/QT Projects/cppunittest_gui/cmUdp.cpp:128: undefined reference to QDebug::~QDebug()' /home/mistral/Desktop/QT Projects/cppunittest_gui/cmUdp.cpp:128: undefined reference to QDebug::~QDebug()'
cmUdp.o: In function cCmUdp::cmUdpSocketClose(CM_UDPSOCKET_HANDLE*)': /home/mistral/Desktop/QT Projects/cppunittest_gui/cmUdp.cpp:279: undefined reference to QDebug::~QDebug()'
cmUdp.o:/home/mistral/Desktop/QT Projects/cppunittest_gui/cmUdp.cpp:279: more undefined references to `QDebug::~QDebug()' follow
collect2: error: ld returned 1 exit status
make: *** [cppunittest_gui] Error 1
11:16:45: The process "/usr/bin/make" exited with code 2.
Error while building/deploying project cppunittest_gui (kit: Desktop Qt 5.5.1 GCC 64bit)
When executing step "Make"
11:16:45: Elapsed time: 00:16.

Thanks
Ayush

kshegunov

@ayush_mistral
At a first glance it looks okay, maybe @SGaist will spot something suspicious, I don't see anything out of the ordinary. What do you have here cmUdp.cpp:73 in your source (+- a couple of lines)? In principle the linker shouldn't be complaining about the destructor. Where does your Qt come from, have you built it yourself or you've installed it from the Qt site? Are you sure the compiler/linker used for building Qt matches the one you're using (although it seem you are)?

Kind regards.

ayush_mistral

@kshegunov

Hi,

I download the QT version for linux from the Qt website only and for compiling and building my application I am using Qt creator IDE.

Thanks and Regards
Ayush

SGaist

Did you also installed Qt from your distribution ?

asanka424

@kshegunov you are linking with wrong libraries. You might have installed Qt from your package manager. So its linking with your program since linker is finding that before the actual libraries. If you are using Qt Creator go to projects tab and chanch path variable. Or uninstall Qt installed using your package manager