Linker error while building with a makefile

[kamleshwark]

Hi All....

I have written a simple Qt application and trying to build it with a makefile. But i am getting linker errors.

#include <QApplication>
#include <QDialog>
 
int main(int argc, char *argv[]){
 
	QApplication app(argc, argv);
	QDialog dlg;
	dlg.show();
    return app.exec();
 
 
}

#include <QApplication>
#include <QDialog>

int main(int argc, char *argv[]){
    
	QApplication app(argc, argv);
	QDialog dlg;
	dlg.show();
    return app.exec();

	
}

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Makefile:

CC=g++
CFLAGS=-c -Wall
LDFLAGS=
 
QTDIR=D:/Qt/2009.02/qt
LIB_PATH=-L"$(QTDIR)/lib"
LIBS=-lqtmaind -lQtGuid4 -lQtCored4
QT_INCLUDE=QtGui QtCore
INCLUDE=-I"." -I"$(QTDIR)/include" $(QT_INCLUDE:Qt=-ID:/Qt/2009.02/qt/include/Qt) 
 
SOURCES=main.cpp 
OBJECTS=$(SOURCES:.cpp=.o)
EXECUTABLE=hello
 
all: $(SOURCES) $(EXECUTABLE)
 
$(EXECUTABLE): $(OBJECTS)
	$(CC) $(LIB_PATH) $(LIBS) $(LDFLAGS) $(OBJECTS) -o $@
 
.cpp.o:
	$(CC) $(CFLAGS)  $< -o $@ $(INCLUDE)
 
 
clean:
#	rm -rf $(TARGET)
	rm -rf *.o

CC=g++
CFLAGS=-c -Wall
LDFLAGS=

QTDIR=D:/Qt/2009.02/qt
LIB_PATH=-L"$(QTDIR)/lib"
LIBS=-lqtmaind -lQtGuid4 -lQtCored4
QT_INCLUDE=QtGui QtCore
INCLUDE=-I"." -I"$(QTDIR)/include" $(QT_INCLUDE:Qt=-ID:/Qt/2009.02/qt/include/Qt) 

SOURCES=main.cpp 
OBJECTS=$(SOURCES:.cpp=.o)
EXECUTABLE=hello

all: $(SOURCES) $(EXECUTABLE)

$(EXECUTABLE): $(OBJECTS)
	$(CC) $(LIB_PATH) $(LIBS) $(LDFLAGS) $(OBJECTS) -o $@

.cpp.o:
	$(CC) $(CFLAGS)  $< -o $@ $(INCLUDE)
	
	
clean:
#	rm -rf $(TARGET)
	rm -rf *.o

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Error Log

Microsoft (R) Program Maintenance Utility Version 9.00.21022.08
Copyright (C) Microsoft Corporation. All rights reserved.

main.o(.text+0x182):main.cpp: undefined reference to `_imp___ZN12QApplicationC1ERiPPci'
main.o(.text+0x1c5):main.cpp: undefined reference to `_imp___ZN7QDialogC1EP7QWidget6QFlagsIN2Qt10Window TypeEE'
main.o(.text+0x1e1):main.cpp: undefined reference to `_imp___ZN12QApplication4execEv'
main.o(.text+0x1fe):main.cpp: undefined reference to `QDialog::~QDialog()'
main.o(.text+0x213):main.cpp: undefined reference to `QApplication::~QApplication()'
main.o(.text+0x25f):main.cpp: undefined reference to `QDialog::~QDialog()'
main.o(.text+0x28c):main.cpp: undefined reference to `QApplication::~QApplication()'
collect2: ld returned 1 exit status
NMAKE : fatal error U1077: 'D:\Qt\2009.02\mingw\bin\g++.EXE' : return code '0x1'
Stop.

Please help.

Regards,
Kamleshwar

[wysota]

Don't create your own Makefiles. change into the directory where your files are located, run qmake -project then qmake again and then (n)make.