Re: [ROOT] Libraries

From: Fons Rademakers (Fons.Rademakers@cern.ch)
Date: Fri Apr 14 2000 - 18:32:34 MEST


Hi Ingo,

  on Linux you could do something like: nm -C ~/root/lib/libEG.so | grep " T "
to see all symbols defined in libEG.so.

Cheers, Fons



Ingo Strauch wrote:
> 
> 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
> 
> ----------------------------------------------------------------------------
> Ingo Strauch       Budapester Str. 30, 20359 Hamburg, Tel.: +49 40 7421 4722
> ----------------------------------------------------------------------------
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> strauch@mail.desy.de                 |   strauch@toots.physik.rwth-aachen.de
> ----------------------------------------------------------------------------
> www-h1.desy.de/~strauch/      or      www-users.rwth-aachen.de/Ingo.Strauch/
> ----------------------------------------------------------------------------

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