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Hello,
I am new to Linux development and I have no idea how to get around this. Kindly help me out.

I installed qtopia on my system through an rpm named qtopia-free-1.7.0-2rh9.i386.rpm.
now when i try to compile a sample code hello2.cpp with the following contents:

#include <qtopia/qpeapplication.h>
int main(int argc, char **argv)
{
QPEApplication a(argc, argv);

return a.exec();
}

I get the following error:

[root@localhost bin]# ./arm-linux-g++ -I /opt/Qtopia/sharp/include/ -DQWS -fno-rtti -o hello2.o -c hello2.cpp
[root@localhost bin]# ./arm-linux-g++ -L /opt/Qtopia/sharp/lib/ -o hello2 hello2.o -lqte -lqpe -ljpeg -luuid
hello2.o(.text+0x6c): In function `main':
: undefined reference to `QPEApplication::QPEApplication[in-charge](int&, char**, QApplication::Type)'
hello2.o(.text+0xa4): In function `main':
: undefined reference to `QMainWindow::QMainWindow[in-charge](QWidget*, char const*, unsigned)'
hello2.o(.text+0xfc): In function `main':
: undefined reference to `QString::QString[in-charge](char const*)'
hello2.o(.text+0x1a: In function `main':
: undefined reference to `QPEApplication::showMainWidget(QWidget*, bool)'
hello2.o(.text+0x1b4): In function `main':
: undefined reference to `QPEApplication::exec()'
hello2.o(.text+0x1cc): In function `main':
: undefined reference to `QPEApplication::~QPEApplication [in-charge]()'
hello2.o(.text+0x1f4): In function `main':
: undefined reference to `QPEApplication::~QPEApplication [in-charge]()'
hello2.o(.gnu.linkonce.r._ZTV6QGList+0xc): undefined reference to `QGList::clear()'
hello2.o(.gnu.linkonce.r._ZTV6QGList+0x10): undefined reference to `QGList::~QGList [in-charge]()'
hello2.o(.gnu.linkonce.r._ZTV6QGList+0x14): undefined reference to `QGList::~QGList [in-charge deleting]()'
hello2.o(.gnu.linkonce.r._ZTV6QGList+0x1: undefined reference to `QCollection::newItem(void*)'
hello2.o(.gnu.linkonce.r._ZTV6QGList+0x1c): undefined reference to `QCollection::deleteItem(void*)'
hello2.o(.gnu.linkonce.r._ZTV6QGList+0x20): undefined reference to `QGList::compareItems(void*, void*)'
hello2.o(.gnu.linkonce.r._ZTV6QGList+0x24): undefined reference to `QGList::read(QDataStream&, void*&)'
hello2.o(.gnu.linkonce.r._ZTV6QGList+0x2: undefined reference to `QGList::write(QDataStream&, void*) const'
hello2.o(.gnu.linkonce.t._ZN7QStringD1Ev+0x64): In function `QString::~QString [in-charge]()':
: undefined reference to `QStringData::deleteSelf()'
hello2.o(.gnu.linkonce.t._ZN7QStringD1Ev+0x70): In function `QString::~QString [in-charge]()':
: undefined reference to `QString::shared_null'
collect2: ld returned 1 exit status
[root@localhost bin]# ./arm-linux-g++ -I /opt/Qtopia/sharp/include/ -DQWS -fno-rtti -o hello2.o -c hello2.cpp
[root@localhost bin]# ./arm-linux-g++ -L /opt/Qtopia/sharp/lib/ -o hello2 hello2.o -lqte -lqpe -ljpeg -luuid
hello2.o(.text+0x6c): In function `main':
: undefined reference to `QPEApplication::QPEApplication[in-charge](int&, char**, QApplication::Type)'
hello2.o(.text+0x80): In function `main':
: undefined reference to `QPEApplication::exec()'
hello2.o(.text+0x9: In function `main':
: undefined reference to `QPEApplication::~QPEApplication [in-charge]()'
hello2.o(.text+0xcc): In function `main':
: undefined reference to `QPEApplication::~QPEApplication [in-charge]()'
hello2.o(.gnu.linkonce.r._ZTV6QGList+0xc): undefined reference to `QGList::clear()'
hello2.o(.gnu.linkonce.r._ZTV6QGList+0x10): undefined reference to `QGList::~QGList [in-charge]()'
hello2.o(.gnu.linkonce.r._ZTV6QGList+0x14): undefined reference to `QGList::~QGList [in-charge deleting]()'
hello2.o(.gnu.linkonce.r._ZTV6QGList+0x1: undefined reference to `QCollection::newItem(void*)'
hello2.o(.gnu.linkonce.r._ZTV6QGList+0x1c): undefined reference to `QCollection::deleteItem(void*)'
hello2.o(.gnu.linkonce.r._ZTV6QGList+0x20): undefined reference to `QGList::compareItems(void*, void*)'
hello2.o(.gnu.linkonce.r._ZTV6QGList+0x24): undefined reference to `QGList::read(QDataStream&, void*&)'
hello2.o(.gnu.linkonce.r._ZTV6QGList+0x2: undefined reference to `QGList::write(QDataStream&, void*) const'
collect2: ld returned 1 exit status

I am using Fedora 6 and compiling for arm target board running on Linux.I want to use qt/embedded for displaying graphics on a TFT LCD connected to arm9 board.

thanks,
ramandeep
contact email: ramandeeps@cimcon.com

Thanks for your interest Mr. Bargi.
At present I am not using any editor as such.After installing the rpm I was just tring to execute a sample code to check.

I followed the procedure according to the following link
http://www.kevinboone.com/myfirstqtopiaapp1.html
http://www.kevinboone.com/myfirstqtopiaapp2.html
http://www.kevinboone.com/myfirstqtopiaapp3.html

I am using arm-linux-gcc as compiler.while compiling I just do the following

cd/usr/local/arm/3.3.2/bin
./arm-linux-g++ -o hello2 hello2.cpp

which leads to the error.

My compiler is working fine since I can compile simple codes on my PC and execute it on the board.
For exmaple I could compile hello1.cpp

#include <iostream.h>
int main(int argc, char **argv)
{ cout << "Hello, world!\n"; }

I can also see the files installed at /opt/Qtopia/sharp/lib/ .All the header files are there including QPEApplication.h and QString.h.

Some Problem with path I guess....but somehow I cant get around this ..Plzz help

Ramandeep

Hello Mr. Bargi,
this is my hello2.cpp program

#include <qmainwindow.h>
#include <qpe/qpeapplication.h>

int main(int argc, char** argv)
{
QPEApplication app(argc, argv);
QMainWindow* mainWindow = new QMainWindow();
mainWindow->setCaption("Hello, World!");
app.showMainWidget(mainWindow);
return app.exec();
}

I have arm-linux-gcc installed at /usr/local/arm/3.3.2.Therefore before compiling I copy the source files(hello2.cpp) to /usr/local/arm/3.3.2/bin and then run the following command

[root@localhost bin]# cd /usr/local/arm/3.3.2/bin
following is the command I use to compile the file:

[root@localhost bin]# ./arm-linux-g++ -I /opt/Qtopia/sharp/include/ -DQWS -fno-rtti -o hello2.o -c hello2.cpp

following is the command I use to link the files:

[root@localhost bin]# ./arm-linux-g++ -L /opt/Qtopia/sharp/lib/ -o hello2 hello2.o -lqte -lqpe -ljpeg -luuid

following is the error I get:

hello2.o(.text+0x6c): In function `main':
: undefined reference to `QPEApplication::QPEApplication[in-charge](int&, char**, QApplication::Type)'
hello2.o(.text+0xa4): In function `main':
: undefined reference to `QMainWindow::QMainWindow[in-charge](QWidget*, char const*, unsigned)'
hello2.o(.text+0xfc): In function `main':
: undefined reference to `QString::QString[in-charge](char const*)'
hello2.o(.text+0x1a: In function `main':
: undefined reference to `QPEApplication::showMainWidget(QWidget*, bool)'
hello2.o(.text+0x1b4): In function `main':
: undefined reference to `QPEApplication::exec()'
hello2.o(.text+0x1cc): In function `main':
: undefined reference to `QPEApplication::~QPEApplication [in-charge]()'
hello2.o(.text+0x1f4): In function `main':
: undefined reference to `QPEApplication::~QPEApplication [in-charge]()'
hello2.o(.gnu.linkonce.r._ZTV6QGList+0xc): undefined reference to `QGList::clear()'
hello2.o(.gnu.linkonce.r._ZTV6QGList+0x10): undefined reference to `QGList::~QGList [in-charge]()'
hello2.o(.gnu.linkonce.r._ZTV6QGList+0x14): undefined reference to `QGList::~QGList [in-charge deleting]()'
hello2.o(.gnu.linkonce.r._ZTV6QGList+0x1: undefined reference to `QCollection::newItem(void*)'
hello2.o(.gnu.linkonce.r._ZTV6QGList+0x1c): undefined reference to `QCollection::deleteItem(void*)'
hello2.o(.gnu.linkonce.r._ZTV6QGList+0x20): undefined reference to `QGList::compareItems(void*, void*)'
hello2.o(.gnu.linkonce.r._ZTV6QGList+0x24): undefined reference to `QGList::read(QDataStream&, void*&)'
hello2.o(.gnu.linkonce.r._ZTV6QGList+0x2: undefined reference to `QGList::write(QDataStream&, void*) const'
hello2.o(.gnu.linkonce.t._ZN7QStringD1Ev+0x64): In function `QString::~QString [in-charge]()':
: undefined reference to `QStringData::deleteSelf()'
hello2.o(.gnu.linkonce.t._ZN7QStringD1Ev+0x70): In function `QString::~QString [in-charge]()':
: undefined reference to `QString::shared_null'
collect2: ld returned 1 exit status

I have also tried copying the header files into the bin drirectory but that didnt help.
Yes I have installed the full package
I carried out
rpm -i qtopia-free-1.7.0-2rh9.i386.rpm
after downloading the file and placing in the root dirctory
I downloaded it from here
http://www.qtopia.org.cn/ftp/mirror/ftp.…0-2rh9.i386.rpm

Do we need to install
Qt/Embedded 2.3.x
Qt 2.3.2 for X11
to get the compilation going?

Thanks,
Ramandeep

Hello,
thanks for the link.Actually I hadnot downloaded the packages you mentioned since I thought I could compile with arm-linux-gcc which I alredy have installed on my system.

Now I have downloaded the four packages from the link you had suggested.
I use the following procedure for installation

[root@localhost /]# cd root
[root@localhost ~]# rpm -i gcc-cross-sa1100-2.95.2-0.i386.rpm
[root@localhost ~]# rpm -i binutils-cross-arm-2.11.2-0.i386.rpm
[root@localhost ~]# rpm -i glibc-arm-2.2.2-0.i386.rpm
error: unpacking of archive failed on file /opt/Embedix/tools/arm-linux/lib/gconv/IBM939.so;47b1703f: cpio: read
[root@localhost ~]# rpm -i linux-headers-arm-sa1100-2.4.6-3.i386.rpm
[root@localhost ~]#

You would have already guessed my next hurdle...I am facing problem while installing glbc-arm-2.2.2-0.i386.rpm.This is the error I face:
error: unpacking of archive failed on file /opt/Embedix/tools/arm-linux/lib/gconv/IBM939.so;47b1703f: cpio: read

what could be the problem?I have arm-linux-gcc installed at /usr/local/arm/3.3.2.Is it creating any conflicting problem?

thanks,
Ramandeep

Hello Mr. Bargi,
I downloaded the file again and luckily it has installed this time.Now I am able to compile the code hello2.cpp

#include <qmainwindow.h>
#include <qpe/qpeapplication.h>

int main(int argc, char** argv)
{
QPEApplication app(argc, argv);
QMainWindow* mainWindow = new QMainWindow();
mainWindow->setCaption("Hello, World!");
app.showMainWidget(mainWindow);
return app.exec();
}

It generated an executable hello2.I transferred the file to my arm9 board running on linux, changed the permissions there and executed the file there.It shows an error:

../hello2: error while loading shared libraries: libqte.so.2: cannot open shared object file: No such file or directory

What could be the problem?

Thanks,
Ramandeep

Thanks...
I checked my PC in the /usr/lib/ folder there is folder called qt-3.3.
If I am not wrong I am supposed to install this tar file on my PC(and not on the board)Please correct me if I am wrong.
Well assuming that I am correct I tried extracting the file in the /usr/lib/ location.I renamed the extracted file as libqt.so.2.3.1.
But how do I make a link named libqt.so.2 linking to libqt.so.2.3.1.
Please forgive me if this question is very basic but I cannot help asking this.

thanks,
ramandeep

I untarred the tar file and placed the untarred file at /usr/lib/qt-3.3/lib .I created the link and placed it at /usr/lib/qt-3.3/lib .I still get the same error.
when I compile the file on my PC it compiles well and creates the executable hello2.then when I transfer the file on my board and execute the executable as:
./hello2
on the board I get the following error:
../hello2: error while loading shared libraries: libqte.so.2: cannot open shared object file: No such file or directory

I believe that when I compile this hello2.cpp it generates code for arm target.But when I execute it on the ARM9 board it gives the above error.
Do I need to install anything on the board?My board is running on ARM9 Linux.It has a TFT LCD connected to the VGA port.I need to display graphics on the LCD.It doesnt have qt installed.
thanks,
ramandeep

Oh thanks for correcting me.
I created the link and placed it at /usr/lib/ folder.
But I still get the same error when I execute the hello2 executable on the board.

thanks,
ramandeep

Thanks.. no you dont need to apologize
I tried with this new one too...I am still stuck....
Do I need to install anything on the board?Because since it is compiling well on the PC I think everythings fine on the PC side.may be we need to check something on the board side?I dont know ...I am confused..

thanks