Linking problem with QtD

[albatroz]

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.