• Qian Xu (24/24) Oct 29 2009 Hi All,
• Eldar Insafutdinov (5/35) Oct 29 2009 Hi!
• albatroz (9/58) Oct 29 2009 Hello,
• Qian Xu (5/70) Oct 29 2009 I am considering two possible reasons:
• Eldar Insafutdinov (2/75) Oct 29 2009 All Qt versions keep forward binary compatibility and a full compatibili...
• Qian Xu (7/13) Oct 30 2009 The problem has been solve.
• Eldar Insafutdinov (2/19) Oct 30 2009 You are welcome. I'm glad you solved the problem. Yes, I should've guess...
• Qian Xu (3/8) Oct 30 2009 Because the demo project uses QApplication and QMainWindow, which belong...
• Eldar Insafutdinov (2/11) Oct 30 2009 Yes it does. Can you post the exact command line that you use when build...

Qian Xu <qian.xu stud.tu-ilmenau.de> writes:

Hi All,

I have almost built the first demo, but ...
The components I have are as follows:
1. QtK SDK (LGPL edition) 4.5.3
2. the latest svn version of QtD (trunk-r309.zip)
3. DMD 1.050
4. Tango (current from trunk)
5. Platform: openSUSE 11.1. 
6. cmake 2.6

After QtD was built successfully, I try to compile the demo
(http://www.dsource.org/projects/qtd/wiki/MacCaseStudy)

I got many linking errors:
[code]../../../../build_dir/build/lib/libqtdgui.a(QPrintDialog_shell.cpp.o):
In function `qtd_QPrintDialog_setOption_PrintDialogOption_bool':
QPrintDialog_shell.cpp:(.text+0x20b): undefined reference to
`QPrintDialog::setOption(QAbstractPrintDialog::PrintDialogOption, bool)'
../../../../build_dir/build/lib/libqtdgui.a(QPrintDialog_shell.cpp.o): In
function `qtd_QPrintDialog_options':
QPrintDialog_shell.cpp:(.text+0x22b): undefined reference to
`QPrintDialog::options() const'[/code]

There are many undefined references. I checked the source and the '.a'
files. These functions are defined correctly.

Have I still forget something by linking the demo or building the library?

Any hint is welcome

Eldar Insafutdinov <e.insafutdinov gmail.com> writes:

Qian Xu Wrote:

 Hi All,
 
 I have almost built the first demo, but ...
 The components I have are as follows:
 1. QtK SDK (LGPL edition) 4.5.3
 2. the latest svn version of QtD (trunk-r309.zip)
 3. DMD 1.050
 4. Tango (current from trunk)
 5. Platform: openSUSE 11.1. 
 6. cmake 2.6
 
 After QtD was built successfully, I try to compile the demo
 (http://www.dsource.org/projects/qtd/wiki/MacCaseStudy)
 
 I got many linking errors:
 [code]../../../../build_dir/build/lib/libqtdgui.a(QPrintDialog_shell.cpp.o):
 In function `qtd_QPrintDialog_setOption_PrintDialogOption_bool':
 QPrintDialog_shell.cpp:(.text+0x20b): undefined reference to
 `QPrintDialog::setOption(QAbstractPrintDialog::PrintDialogOption, bool)'
 ../../../../build_dir/build/lib/libqtdgui.a(QPrintDialog_shell.cpp.o): In
 function `qtd_QPrintDialog_options':
 QPrintDialog_shell.cpp:(.text+0x22b): undefined reference to
 `QPrintDialog::options() const'[/code]
 
 There are many undefined references. I checked the source and the '.a'
 files. These functions are defined correctly.
 
 Have I still forget something by linking the demo or building the library?
 
 Any hint is welcome

Hi!

Undefined symbols that are missing are from Qt libs. I'd recommend to do 'make
install' after you build QtD (don't forget to specify CMAKE_INSTALL_PREFIX
option in cmake prior to build to point to the directory where you have your
dmd toolchain) and then look into the build scripts of the examples which
typically have a name build.sh. They contain the command line with all
necessary libraries to link, typically:

-L-lqtdgui -L-lqtdcore -L-lQtCore -L-lQtGui

I saw you made the reference to this link
(http://www.dsource.org/projects/qtd/wiki/MacCaseStudy which contains this
command line option, but still I don't understand why you get undefined symbols
like QPrintDialog::options() const which belongs to libQtGui.

albatroz <rmcjustino gmail.com> writes:

Eldar Insafutdinov wrote:

 Qian Xu Wrote:
 
 Hi All,
 
 I have almost built the first demo, but ...
 The components I have are as follows:
 1. QtK SDK (LGPL edition) 4.5.3
 2. the latest svn version of QtD (trunk-r309.zip)
 3. DMD 1.050
 4. Tango (current from trunk)
 5. Platform: openSUSE 11.1.
 6. cmake 2.6
 
 After QtD was built successfully, I try to compile the demo
 (http://www.dsource.org/projects/qtd/wiki/MacCaseStudy)
 
 I got many linking errors:
 


[code]../../../../build_dir/build/lib/libqtdgui.a(QPrintDialog_shell.cpp.o):
 In function `qtd_QPrintDialog_setOption_PrintDialogOption_bool':
 QPrintDialog_shell.cpp:(.text+0x20b): undefined reference to
 `QPrintDialog::setOption(QAbstractPrintDialog::PrintDialogOption, bool)'
 ../../../../build_dir/build/lib/libqtdgui.a(QPrintDialog_shell.cpp.o): In
 function `qtd_QPrintDialog_options':
 QPrintDialog_shell.cpp:(.text+0x22b): undefined reference to
 `QPrintDialog::options() const'[/code]
 
 There are many undefined references. I checked the source and the '.a'
 files. These functions are defined correctly.
 
 Have I still forget something by linking the demo or building the
 library?
 
 Any hint is welcome

 
 Hi!
 
 Undefined symbols that are missing are from Qt libs. I'd recommend to do
 'make install' after you build QtD (don't forget to specify
 CMAKE_INSTALL_PREFIX option in cmake prior to build to point to the
 directory where you have your dmd toolchain) and then look into the build
 scripts of the examples which typically have a name build.sh. They contain
 the command line with all necessary libraries to link, typically:
 
 -L-lqtdgui -L-lqtdcore -L-lQtCore -L-lQtGui
 
 I saw you made the reference to this link
 (http://www.dsource.org/projects/qtd/wiki/MacCaseStudy which contains this
 command line option, but still I don't understand why you get undefined
 symbols like QPrintDialog::options() const which belongs to libQtGui.

Hello,

I decided not to install it globally, first export to ldd the path to your 
QT lib folder

export LIBRARY_PATH=/usr/lib64/qt4/

and build the examples using the complete path of libQtGui

-L/usr/lib64/qt4/libQtGui.so -L-lqtdgui -L-lqtdcore -L-lQtCore -L-lQtGui 

This allows me to have several folders with different versions.

Qian Xu <qian.xu funkwerk-itk.com> writes:

albatroz Wrote:

 Eldar Insafutdinov wrote:
 
 Qian Xu Wrote:
 
 Hi All,
 
 I have almost built the first demo, but ...
 The components I have are as follows:
 1. QtK SDK (LGPL edition) 4.5.3
 2. the latest svn version of QtD (trunk-r309.zip)
 3. DMD 1.050
 4. Tango (current from trunk)
 5. Platform: openSUSE 11.1.
 6. cmake 2.6
 
 After QtD was built successfully, I try to compile the demo
 (http://www.dsource.org/projects/qtd/wiki/MacCaseStudy)
 
 I got many linking errors:
 


 [code]../../../../build_dir/build/lib/libqtdgui.a(QPrintDialog_shell.cpp.o):
 In function `qtd_QPrintDialog_setOption_PrintDialogOption_bool':
 QPrintDialog_shell.cpp:(.text+0x20b): undefined reference to
 `QPrintDialog::setOption(QAbstractPrintDialog::PrintDialogOption, bool)'
 ../../../../build_dir/build/lib/libqtdgui.a(QPrintDialog_shell.cpp.o): In
 function `qtd_QPrintDialog_options':
 QPrintDialog_shell.cpp:(.text+0x22b): undefined reference to
 `QPrintDialog::options() const'[/code]
 
 There are many undefined references. I checked the source and the '.a'
 files. These functions are defined correctly.
 
 Have I still forget something by linking the demo or building the
 library?
 
 Any hint is welcome

 
 Hi!
 
 Undefined symbols that are missing are from Qt libs. I'd recommend to do
 'make install' after you build QtD (don't forget to specify
 CMAKE_INSTALL_PREFIX option in cmake prior to build to point to the
 directory where you have your dmd toolchain) and then look into the build
 scripts of the examples which typically have a name build.sh. They contain
 the command line with all necessary libraries to link, typically:
 
 -L-lqtdgui -L-lqtdcore -L-lQtCore -L-lQtGui
 
 I saw you made the reference to this link
 (http://www.dsource.org/projects/qtd/wiki/MacCaseStudy which contains this
 command line option, but still I don't understand why you get undefined
 symbols like QPrintDialog::options() const which belongs to libQtGui.

 
 Hello,
 
 I decided not to install it globally, first export to ldd the path to your 
 QT lib folder
 
 export LIBRARY_PATH=/usr/lib64/qt4/
 
 and build the examples using the complete path of libQtGui
 
 -L/usr/lib64/qt4/libQtGui.so -L-lqtdgui -L-lqtdcore -L-lQtCore -L-lQtGui 
 
 This allows me to have several folders with different versions.

I am considering two possible reasons:
1. I linked to a wrong Qt-library
2. The QtD is not compatible with Qt 4.5.3 (I Saw the build package uses Qt
4.5.2, maybe those undefined references comes from Qt 4.5.3)

I have also downloaded a pre-compiled QtD library from code.google.com, it
works. I can compile Hello world programs. However, this version does not
contain all classes as the library I was trying to build. If later I find that
some important classes are missing, it will be a big problem for choosing QtD.

Eldar Insafutdinov <e.insafutdinov gmail.com> writes:

Qian Xu Wrote:

 albatroz Wrote:
 
 Eldar Insafutdinov wrote:
 
 Qian Xu Wrote:
 
 Hi All,
 
 I have almost built the first demo, but ...
 The components I have are as follows:
 1. QtK SDK (LGPL edition) 4.5.3
 2. the latest svn version of QtD (trunk-r309.zip)
 3. DMD 1.050
 4. Tango (current from trunk)
 5. Platform: openSUSE 11.1.
 6. cmake 2.6
 
 After QtD was built successfully, I try to compile the demo
 (http://www.dsource.org/projects/qtd/wiki/MacCaseStudy)
 
 I got many linking errors:
 


 [code]../../../../build_dir/build/lib/libqtdgui.a(QPrintDialog_shell.cpp.o):
 In function `qtd_QPrintDialog_setOption_PrintDialogOption_bool':
 QPrintDialog_shell.cpp:(.text+0x20b): undefined reference to
 `QPrintDialog::setOption(QAbstractPrintDialog::PrintDialogOption, bool)'
 ../../../../build_dir/build/lib/libqtdgui.a(QPrintDialog_shell.cpp.o): In
 function `qtd_QPrintDialog_options':
 QPrintDialog_shell.cpp:(.text+0x22b): undefined reference to
 `QPrintDialog::options() const'[/code]
 
 There are many undefined references. I checked the source and the '.a'
 files. These functions are defined correctly.
 
 Have I still forget something by linking the demo or building the
 library?
 
 Any hint is welcome

 
 Hi!
 
 Undefined symbols that are missing are from Qt libs. I'd recommend to do
 'make install' after you build QtD (don't forget to specify
 CMAKE_INSTALL_PREFIX option in cmake prior to build to point to the
 directory where you have your dmd toolchain) and then look into the build
 scripts of the examples which typically have a name build.sh. They contain
 the command line with all necessary libraries to link, typically:
 
 -L-lqtdgui -L-lqtdcore -L-lQtCore -L-lQtGui
 
 I saw you made the reference to this link
 (http://www.dsource.org/projects/qtd/wiki/MacCaseStudy which contains this
 command line option, but still I don't understand why you get undefined
 symbols like QPrintDialog::options() const which belongs to libQtGui.

 
 Hello,
 
 I decided not to install it globally, first export to ldd the path to your 
 QT lib folder
 
 export LIBRARY_PATH=/usr/lib64/qt4/
 
 and build the examples using the complete path of libQtGui
 
 -L/usr/lib64/qt4/libQtGui.so -L-lqtdgui -L-lqtdcore -L-lQtCore -L-lQtGui 
 
 This allows me to have several folders with different versions.

 
 I am considering two possible reasons:
 1. I linked to a wrong Qt-library
 2. The QtD is not compatible with Qt 4.5.3 (I Saw the build package uses Qt
4.5.2, maybe those undefined references comes from Qt 4.5.3)
 
 I have also downloaded a pre-compiled QtD library from code.google.com, it
works. I can compile Hello world programs. However, this version does not
contain all classes as the library I was trying to build. If later I find that
some important classes are missing, it will be a big problem for choosing QtD.

All Qt versions keep forward binary compatibility and a full compatibility
within a major version, 4.5.3 contains only bug fixes compared to 4.5.2.
Version from code.google.com is a waaaaay to old, so I would not even consider
it. Have you tried to turn on BUILD_EXAMPLES option in cmake? It will build all
examples bundled with qtd.

Qian Xu <qian.xu stud.tu-ilmenau.de> writes:

Eldar Insafutdinov wrote:
 
 All Qt versions keep forward binary compatibility and a full compatibility
 within a major version, 4.5.3 contains only bug fixes compared to 4.5.2.
 Version from code.google.com is a waaaaay to old, so I would not even
 consider it. Have you tried to turn on BUILD_EXAMPLES option in cmake? It
 will build all examples bundled with qtd.

The problem has been solve.

The linker "ld" searches first in "/usr/lib" (Qt 4.4.3) and then
my "/my-qt-sdk/lib", even when the path "/usr/lib" is not specified. 

I checked the man page of "ld". There is an argument "-rpath-link". If it is
not specified, the "/usr/lib" will be assumed.

So my problem is solve. Thanks for you all. Have a nice day.

Eldar Insafutdinov <e.insafutdinov gmail.com> writes:

Qian Xu Wrote:

 Eldar Insafutdinov wrote:
 
 All Qt versions keep forward binary compatibility and a full compatibility
 within a major version, 4.5.3 contains only bug fixes compared to 4.5.2.
 Version from code.google.com is a waaaaay to old, so I would not even
 consider it. Have you tried to turn on BUILD_EXAMPLES option in cmake? It
 will build all examples bundled with qtd.

 
 The problem has been solve.
 
 The linker "ld" searches first in "/usr/lib" (Qt 4.4.3) and then
 my "/my-qt-sdk/lib", even when the path "/usr/lib" is not specified. 
 
 I checked the man page of "ld". There is an argument "-rpath-link". If it is
 not specified, the "/usr/lib" will be assumed.
 
 So my problem is solve. Thanks for you all. Have a nice day.

You are welcome. I'm glad you solved the problem. Yes, I should've guessed an
issue, since it was missing symbols from Qt 4.5, on which QtD is based on. And
it worked with version from google-code, because it was using Qt 4.4.

Qian Xu <qian.xu stud.tu-ilmenau.de> writes:

Eldar Insafutdinov wrote:
 
 I saw you made the reference to this link
 (http://www.dsource.org/projects/qtd/wiki/MacCaseStudy which contains this
 command line option, but still I don't understand why you get undefined
 symbols like QPrintDialog::options() const which belongs to libQtGui.

Because the demo project uses QApplication and QMainWindow, which belong to
libQtGui.

Eldar Insafutdinov <e.insafutdinov gmail.com> writes:

Qian Xu Wrote:

 Eldar Insafutdinov wrote:
 
 I saw you made the reference to this link
 (http://www.dsource.org/projects/qtd/wiki/MacCaseStudy which contains this
 command line option, but still I don't understand why you get undefined
 symbols like QPrintDialog::options() const which belongs to libQtGui.

 
 Because the demo project uses QApplication and QMainWindow, which belong to
 libQtGui.

Yes it does. Can you post the exact command line that you use when building an
example?