failed to crosscompiling with qt 4.8

[bkroy]

Hi,
when i am trying to crosscompile my qt application below errors are commig
i am using qt 4.8 and ubuntu 12.4


:
root@anvesh-virtual-machine:~/Desktop/new_test# make
arm-linux-gnueabihf-g++ -O0 -g -Wall -I./ -I/root/rpi/mntrpi/usr/include/qt4/ -I/root/rpi/mntrpi/usr/include/qt4/QtGui -I/root/rpi/mntrpi/usr/include/qt4/Qt -I/root/rpi/mntrpi/usr/include/qt4/QtCore -c main.cpp
arm-linux-gnueabihf-g++ -O0 -g -Wall -I./ -I/root/rpi/mntrpi/usr/include/qt4/ -I/root/rpi/mntrpi/usr/include/qt4/QtGui -I/root/rpi/mntrpi/usr/include/qt4/Qt -I/root/rpi/mntrpi/usr/include/qt4/QtCore -c mainwindow.cpp
arm-linux-gnueabihf-g++ -O0 -g -Wall -I./ -I/root/rpi/mntrpi/usr/include/qt4/ -I/root/rpi/mntrpi/usr/include/qt4/QtGui -I/root/rpi/mntrpi/usr/include/qt4/Qt -I/root/rpi/mntrpi/usr/include/qt4/QtCore -c tst.cpp
moc-qt4 mainwindow.h -o mainwindow.moc.cpp
arm-linux-gnueabihf-g++ -O0 -g -Wall -I./ -I/root/rpi/mntrpi/usr/include/qt4/ -I/root/rpi/mntrpi/usr/include/qt4/QtGui -I/root/rpi/mntrpi/usr/include/qt4/Qt -I/root/rpi/mntrpi/usr/include/qt4/QtCore -c mainwindow.moc.cpp
moc-qt4 mainwindow.h -o tst.moc.cpp
arm-linux-gnueabihf-g++ -O0 -g -Wall -I./ -I/root/rpi/mntrpi/usr/include/qt4/ -I/root/rpi/mntrpi/usr/include/qt4/QtGui -I/root/rpi/mntrpi/usr/include/qt4/Qt -I/root/rpi/mntrpi/usr/include/qt4/QtCore -c tst.moc.cpp
arm-linux-gnueabihf-g++ -L/root/rpi/mntrpi/usr/lib/arm-linux-gnueabihf -L/root/rpi/mntrpi/usr/local/lib -lQtCore -lQtGui -Xlinker -rpath-link=/root/rpi/mntrpi/lib/arm-linux-gnueabihf -Xlinker -rpath-link=/root/rpi/mntrpi/usr/lib/arm-linux-gnueabihf -lQtNetwork -lpthread -lwiringPi main.o mainwindow.o tst.o mainwindow.moc.o tst.moc.o -o new_test
tst.moc.o: In function `qt_noop()':
/root/Desktop/new_test/tst.moc.cpp:41: multiple definition of `MainWindow::qt_static_metacall(QObject*, QMetaObject::Call, int, void**)'
mainwindow.moc.o:/root/Desktop/new_test/mainwindow.moc.cpp:41: first defined here
tst.moc.o:(.rodata+0x0): multiple definition of `MainWindow::staticMetaObjectExtraData'
mainwindow.moc.o:(.rodata+0x0): first defined here
tst.moc.o:(.rodata+0x8): multiple definition of `MainWindow::staticMetaObject'
mainwindow.moc.o:(.rodata+0x8): first defined here
tst.moc.o: In function `QScopedPointer<QObjectData, QScopedPointerDeleter<QObjectData> >::operator->() const':
/root/Desktop/new_test/tst.moc.cpp:62: multiple definition of `MainWindow::metaObject() const'
mainwindow.moc.o:/root/Desktop/new_test/mainwindow.moc.cpp:62: first defined here
tst.moc.o: In function `MainWindow::qt_metacast(char const*)':
/root/Desktop/new_test/tst.moc.cpp:67: multiple definition of `MainWindow::qt_metacast(char const*)'
mainwindow.moc.o:/root/Desktop/new_test/mainwindow.moc.cpp:67: first defined here
tst.moc.o: In function `MainWindow::qt_metacall(QMetaObject::Call, int, void**)':
/root/Desktop/new_test/tst.moc.cpp:75: multiple definition of `MainWindow::qt_metacall(QMetaObject::Call, int, void**)'
mainwindow.moc.o:/root/Desktop/new_test/mainwindow.moc.cpp:75: first defined here
tst.moc.o:(.rodata+0x58): multiple definition of `vtable for MainWindow'
mainwindow.moc.o:(.rodata+0x58): first defined here
tst.moc.o:(.rodata+0x158): multiple definition of `typeinfo for MainWindow'
mainwindow.moc.o:(.rodata+0x158): first defined here
tst.moc.o:(.rodata+0x164): multiple definition of `typeinfo name for MainWindow'
mainwindow.moc.o:(.rodata+0x164): first defined here
tst.o: In function `tst::tst(QWidget*)':
/root/Desktop/new_test/tst.cpp:9: undefined reference to `vtable for tst'
/root/Desktop/new_test/tst.cpp:9: undefined reference to `vtable for tst'
tst.o: In function `tst::~tst()':
/root/Desktop/new_test/tst.cpp:14: undefined reference to `vtable for tst'
/root/Desktop/new_test/tst.cpp:14: undefined reference to `vtable for tst'
collect2: error: ld returned 1 exit status
make: *** [all] Error 1
rm mainwindow.moc.cpp tst.moc.cpp

below i am displaying my files

main.cpp

#include <QApplication>
#include "mainwindow.h"

int main(int argc, char *argv[])
{
QApplication a(argc, argv);
MainWindow w;
w.show();

return a.exec();
}
//////////////////////////////////////////////////////////////////////////////////////////////////////

mainwindow.cpp

#include "mainwindow.h"
#include "ui_mainwindow.h"

MainWindow::MainWindow(QWidget *parent) :
QMainWindow(parent),
ui(new Ui::MainWindow)
{
ui->setupUi(this);
}

MainWindow::~MainWindow()
{
delete ui;
}
/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
mainwindow.h

#ifndef MAINWINDOW_H
#define MAINWINDOW_H

#include <QMainWindow>

namespace Ui {
class MainWindow;
}

class MainWindow : public QMainWindow
{
Q_OBJECT

public:
explicit MainWindow(QWidget *parent = 0);
~MainWindow();

private:
Ui::MainWindow *ui;
};

#endif // MAINWINDOW_H

//////////////////////////////////////////////////
tst.cpp


#include "tst.h"
#include "ui_tst.h"

tst::tst(QWidget *parent) :
QWidget(parent),
ui(new Ui::tst)
{
ui->setupUi(this);
}

tst::~tst()
{
delete ui;
}
/////////////////////////////////////////////////////////////////////////////////////////////////////////////
tst.h

#ifndef TST_H
#define TST_H

#include <QWidget>

namespace Ui {
class tst;
}

class tst : public QWidget
{
Q_OBJECT

public:
explicit tst(QWidget *parent = 0);
~tst();

private:
Ui::tst *ui;
};

#endif // TST_H

////////////////////////////////////////////////////////////////////////////////////////////////////

Makefile

################################################## ###########################
# Makefile for building: new_test
# Generated by qmake (2.01a) (Qt 4.8.1) on: Mon Jan 4 15:21:41 2016
# Project: new_test.pro
# Template: app
# Command: /usr/bin/qmake -o Makefile new_test.pro
################################################## ###########################

####### Compiler, tools and options


CXX=arm-linux-gnueabihf-g++

INCLUDEDIR = ./
INCLUDEDIR += $(HOME)/rpi/mntrpi/usr/include/qt4/
INCLUDEDIR += $(HOME)/rpi/mntrpi/usr/include/qt4/QtGui
INCLUDEDIR += $(HOME)/rpi/mntrpi/usr/include/qt4/Qt
INCLUDEDIR += $(HOME)/rpi/mntrpi/usr/include/qt4/QtCore
#INCLUDEDIR += $(HOME)/rpi/mntrpi/usr/local/include
#INCLUDEDIR += $(HOME)/rpi/mntrpi/usr/local/include
#INCLUDEDIR += /usr/local/include

#INCLUDEPATH += /mnt/rasp-pi-rootfs/usr/local/include
#LIBS += -L/mnt/rasp-pi-rootfs/usr/local/lib -lwiringPi

LIBRARYDIR = $(HOME)/rpi/mntrpi/usr/lib/arm-linux-gnueabihf
LIBRARYDIR +=$(HOME)/rpi/mntrpi/usr/local/lib
LIBRARY += QtCore QtGui
XLINK_LIBDIR = $(HOME)/rpi/mntrpi/lib/arm-linux-gnueabihf
#XLINK_LIBDIR += $(HOME)/rpi/mntrpi/usr/local/lib
XLINK_LIBDIR += $(HOME)/rpi/mntrpi/usr/lib/arm-linux-gnueabihf
#XLINK_LIBDIR += $(HOME)/rpi/mntrpi/usr/local/lib/

INCDIR = $(patsubst %,-I%,$(INCLUDEDIR))
LIBDIR = $(patsubst %,-L%,$(LIBRARYDIR))
LIB = $(patsubst %,-l%,$(LIBRARY))
XLINKDIR = $(patsubst %,-Xlinker -rpath-link=%,$(XLINK_LIBDIR))

OPT = -O0
DEBUG = -g
WARN= -Wall
PTHREAD= -lpthread
GPIO = -lwiringPi
QTGUI = -lQtGui
QTNETWORK = -lQtNetwork
QTCORE = -lQtCore

CXXFLAGS= $(OPT) $(DEBUG) $(WARN) $(INCDIR)
LDFLAGS= $(LIBDIR) $(LIB) $(XLINKDIR) $(QTNETWORK) $(PTHREAD) $(GPIO)

INC = mainwindow.h tst.h
SRC = main.cpp mainwindow.cpp tst.cpp

OBJ = $(SRC:.cpp=.o) $(INC:.h=.moc.o)


all: $(OBJ)
$(CXX) $(LDFLAGS) $(OBJ) -o new_test


%.moc.cpp: $(INC)
moc-qt4 $< -o $@

%.o:%.cpp
$(CXX) $(CXXFLAGS) -c $<

clean:
-rm *.o
-rm new_test

/////////////////////////////////////////////////////////////////////////

[d_stranz]

Did you run qmake after making changes to your project? Did you make clean as well before rebuilding?