[Rivet] auxiliary scripts in several generators.

[Pere Mato Vila]

Hi Andy,

> Hi Pere et al,
> 
> I notice that ROOT has a root-config script: does that somehow survive
> Grid/CVMFS relocation? I have to admit that I've only used it locally.

Yes it does. 

> 
> In my local, privately made build of ROOT I see lines like
> bindir=/usr/local/bin

I do not know which one you are looking. We never install ROOT at the system.  In the installations on AFS (e.g. /afs/cern.ch/sw/lcg/app/releases/ROOT/5.34.04/x86_64-slc5-gcc43-opt/root/bin/root-config ) I see lines like

   fullpath1=$0
 ...
    lpath=`dirname $0`
    fullpath1=$lpath/$fullpath1
  ....
ROOTSYS=`dirname $fullpath1`

So it gets the installation location relative from the location of root-config
 
> in this script, (I installed into prefix=/usr/local) so I suspect that
> it suffers from the same problem. If so, there are *-config script
> problems closer to the heart of SFT/LCG than the myriad external
> generator packages!

  Strange justification. 

> But if there's a clever trick in the there that
> makes it "just work", then I'd be happy to try to put it into the
> packages that I have control over.
> 

Thanks. Another example code  can be found at http://svnweb.cern.ch/world/wsvn/clhep/trunk/clhep-config.in

Cheers,

			Pere