Re: [ROOT] Libraries

From: Ingo Strauch (strauch@toots.physik.rwth-aachen.de)
Date: Fri Apr 14 2000 - 17:53:30 MEST


Victor Perevoztchikov wrote:
> 
> I want only to add, that if for somebody this is not convenient, it is very
> easy to load automatically additional libraries in .rootlogon , as we do
> in STAR.

I hope that the use of .rootlogon files is one of the first things one gets
told when one starts to use ROOT ;-)

Maybe I should give a more concrete example of my problem:

Let's say I want to use the TLockGuard class. Naive as I am, I try

----------------------------------------------------------------------------
root [1] TLockGuard *mylock = new TLockGuard()
Error: No symbol TLockGuard in current scope FILE:/tmp/filetUEalg_cint LINE:1
*** Interpreter error recovered ***

 *** Break *** segmentation violation
----------------------------------------------------------------------------

Then I can vaguely remember that some libraries are not loaded by default. But
now I don't know which library it is which contains the TLockGuard class...
I could load ALL libraries (libEG, libPhysics, libThread, libTreePlayer,
libTreeViewer and all others I find in $ROOTSYS/lib) but that's certainly not
what I want.

The other problem is: some time ago I used the libEG and since then I load it
in my .rootlogon. But I can't remember the reason for using libEG (i.e. which
class I used that is in libEG). So now I look for a way to find out what's in
that library. And if I no longer use these classes I could drop libEG from my
.rootlogon.
Is there a way to 'look' at all symbols in a shared library? If not: somebody
must have built that library and she could tell me what she has put in it...

Cheers,
Ingo

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