Hi Harufumi,
The class TGLVEntry is in libGui.so. Are you executing with
your own main program? If yes, are you linking with libGui.
See how the Root main program is linked. We strongly suggest
to use the small utility root-config in $ROOTSYS/bin, eg
g++ -o mymain mymain.cxx `root-config --cflags --glibs`
Rene Brun
On Wed, 25 Sep 2002, Harufumi TSUCHIYA wrote:
> From: Rene Brun <Rene.Brun@cern.ch>
> Subject: Re: [ROOT] Can not display using tree->StartViewer();
> Date: Tue, 24 Sep 2002 17:27:10 +0200 (METDST)
>
> Thank you for quick reply.
>
> > Did you have any problem when compiling/linking on your FreeBSD system?
> Sorry, I do not know if there was problem or not when compiling/linking.
> But, I can complile and link my g++ prgram with ROOT libraries.
>
> > Did you check that $ROOTSYS/lib/libTreeViewer.so exists?
> Yes, it exists.
>
> > if yes, can you do the following:
> > root > gSystem->Load("libTreeViewer");
> > root > .class TTreeViewer
> root [0] gSystem->Load("libTreeViewer");
> dlopen error: /mnt/home/01a/harufumi/local/root/lib/./libTreeViewer.so: Undefined symbol "__ti9TGLVEntry"
> Load Error: Failed to load Dynamic link library /mnt/home/01a/harufumi/local/root/lib/./libTreeViewer.so
> *** Interpreter error recovered ***
>
> Also I checked if other libraries could be loaded using gSystem->Load().
> As a result, I got the same error message when loading the following libralires.
> libGeomPainter.so
> libRGL.so
> libTable.so
> libX3d.so
>
>
> > If all the above works, can you try:
> > root > gSystem->Load("libTreeViewer");
> > root > TFile *f = new TFile("tree1.root");
> > root > TTree *t = (TTree*)f->Get("t1");
> > root > t->StartViewer();
> Sorry, As I got the same error messages, I could not test this.
>
>
> > On Tue, 24 Sep 2002, Harufumi TSUCHIYA wrote:
> >
> > > Hello ROOTers.
> > >
> > > I would like to use treeviewer. But, I could not succeeded in
> > > viewing.
> > > I did following ways.
> > >
> > > In $ROOTSYS/tutrials
> > > root [0] TFile *f = new TFile("tree1.root");
> > > root [1] TTree *t = (TTree*)f->Get("t1");
> > > root [2] t->StartViewer();
> > > dlopen error: /home/01a/harufumi/local/root/lib/libTreeViewer.so: Undefined symbol "__ti9TGLVEntry"
> > > Load Error: Failed to load Dynamic link library /home/01a/harufumi/local/root/lib/libTreeViewer.so
> > > Error in <TPluginHandler::SetupCallEnv>: class TTreeViewer not found in plugin TreeViewer
> > > *** Interpreter error recovered ***
> > >
> > > I got error messages like this.
> > > I also tested my ROOT files which contains tree object. But
> > > I falied to view tree, getting the same error messages.
> > >
> > > I use ROOT v 3.03.09 which was complied from source on FreeBSD 4.6.2-RELEASE
> > > using g++ 2.95.3
> > >
> > > Please give me any suggestions.
> > >
> > > Harufumi Tsuchiya
> > >
> >
>
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