Root and GSI QtRoot classes linker failed

ROOT
,
1

Dear all,
I’m trying to compile minimalistic app with QRootApplication including GSI interface for QrROOT integration. Compilation is fine (I see all headers), however I’m faced with linking problem:

[ 12%] Linking CXX executable run
CMakeFiles/run.dir/QtRoot/QRootCanvas.cpp.o: In function `QRootCanvas::executeMenu(int)':
QRootCanvas.cpp:(.text+0x46f4): undefined reference to `typeinfo for TGedEditor'
CMakeFiles/run.dir/QtRoot/QRootWindow.cpp.o: In function `TGWindow::HandleExpose(Event_t*)':
QRootWindow.cpp:(.text._ZN8TGWindow12HandleExposeEP7Event_t[_ZN8TGWindow12HandleExposeEP7Event_t]+0x33): undefined reference to `TGClient::NeedRedraw(TGWindow*, bool)'
CMakeFiles/run.dir/QtRoot/QRootWindow.cpp.o: In function `TGDimension::TGDimension(unsigned int, unsigned int)':
QRootWindow.cpp:(.text._ZN11TGDimensionC2Ejj[_ZN11TGDimensionC5Ejj]+0x11): undefined reference to `vtable for TGDimension'
CMakeFiles/run.dir/QtRoot/QRootWindow.cpp.o: In function `TGDimension::~TGDimension()':
QRootWindow.cpp:(.text._ZN11TGDimensionD2Ev[_ZN11TGDimensionD5Ev]+0xb): undefined reference to `vtable for TGDimension'
...

I’ve attached this little example below. Do anybody have an idea why I do not see these definitions? I’ve compiled root with -Dqt=ON -Dqtgsi=ON

Thanks in advance for help,
Bartek

qrootgsi.tar.gz (21.5 KB)

ROOT Version: 14.02
Platform: Centos 7
Compiler: gcc 7.3.0

2

Can anyone add some hints in this topic?

3

Hi,

I’ll check next week (we are in a conference this week)

Cheers, Bertrand

4

Try with:

target_link_libraries(run
                      ${ROOT_LIBRARIES} ${ROOT_LIBRARY_DIR}/libGui.so
                      ${ROOT_LIBRARY_DIR}/libGed.so
                      Qt5::Widgets
                      Qt5::Gui
                      X11
                      ${QT5ALL_LDFLAGS})
5

Indeed that works! Thank you! Is there special reason why the libGui.so is not included from the ${ROOT_LIBRARIES}?

1 Like
6

${ROOT_LIBRARIES} is the minimal set of libraries

7

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