link error

Hello,

MOving from 516 to 520 on a linux machine (after recompilation) I go the error messages:
/usr/local/root_520/lib/libMinuit.so: undefined reference to
`TMath::StudentQuantile(double, double, bool)'
/usr/local/root_520/lib/libTree.so: undefined reference to
`TThread::TThread(char const*, void* (*)(void*), void*, TThread::EPriority)'
/usr/local/root_520/lib/libHist.so: undefined reference to
`ROOT::Math::GaussIntegrator::GaussIntegrator()'
/usr/local/root_520/lib/libHist.so: undefined reference to
`TMath::ErfInverse(double)'

I am set $ROOTSYS and $LD_LIBRARY_LD properly. root works but not when I link it !!
Did I forget something ?

Thank

-- 
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==========================================================================
  Patrick DUPRÉ                      |   |
  Department of Chemistry            |   |    Phone: (44)-(0)-1904-434384
  The University of York             |   |    Fax:   (44)-(0)-1904-432516
  Heslington                         |   |
  York YO10 5DD  United Kingdom      |   |    email: pd520_at_york.ac.uk
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