[ROOT] ACLiC error

From: Davide Grandi (Davide.Grandi@cern.ch)
Date: Tue Mar 18 2003 - 18:47:33 MET


Dear root family,
	I use root version 3.05.02 on Linux RH 7.2 on a double processor
2.00GHz machine.
	I'm reading a tree with TCloneArrays, TRef and TRefArrays. So: 
1) I load the tree 

root[0] TFile *f = new TFile("tree.root");

2) and root warns about dictionary as for example

Warning in <TClass::TClass>: no dictionary for class TrRecHitRoot02 is 
available

3) I generate the dictionary and shared lib and dynamically link it

root [1] f.MakeProject("demo","*","recreate++");

demo/MAKE file has been generated
Shared lib demo/demo.so has been generated
Shared lib demo/demo.so has been dynamically linked

4) then I create with MakeSelector a test.C and test.h file 

root [2] Roottree->MakeSelector("test");
Info in <TTreePlayer::MakeClass>: Files: test.h and test.C generated 
from Tree: Roottree

5) I include all files *.h of dir demo/ in test.h. Then I run
 
root [3] Roottree.Process ("test.C"))

on the tree simply doing for example in Processfill

 fChain->GetTree()->GetEntry(entry);
 cout << entry << endl;

And everything works fine.

6) But if I try to use ACLiC as 

root[4] Roottree.Process("test.C+"); //or ("test.C++");

I got 

Info in <TUnixSystem::ACLiC>: creating shared library 
/users/dgrandi/./test_C.so

and immediately the following error:

Error: link requested for unknown class TrRecHitRoot02 
FILE:/users/dgrandi/demo/LinkDef.h LINE:24

with final result

Warning: Error occured during reading source files
Warning: Error occured during dictionary source generation
!!!Removing /users/dgrandi/./fileuvnwjO.cxx 
/users/dgrandi//./fileuvnwjO.h !!!
Error: rootcint: error loading headers...
Error in <ACLiC>: Dictionary generation failed!
Error in <TSelector::GetSelector>: file test.C+ does not have a valid 
class deriving from TSelector


Does someone have an idea why I got this link error (after creating shared 
lib and having linked it....) and how to avoid it?

Thank You in advance

Cheers
Davide

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This archive was generated by hypermail 2b29 : Thu Jan 01 2004 - 17:50:10 MET