Missing Minuit2 Libraries

Newbie
1

Hello,

I am trying to run Minuit2 on my other computer. I installed root 6.22.00. I have a program called niminimzation.cpp and I try to compile it by running

g++ -I/home/christian/root/include -L/home/christian/root/lib niminimzationExample.cpp -o niminimzationExample -lMinuit2

but when I do I get the following error

/usr/bin/ld: warning: libHist.so.6.22, needed by /home/christian/root/lib/libMinuit2.so, not found (try using -rpath or -rpath-link)
/usr/bin/ld: warning: libMathCore.so.6.22, needed by /home/christian/root/lib/libMinuit2.so, not found (try using -rpath or -rpath-link)
/usr/bin/ld: warning: libCore.so.6.22, needed by /home/christian/root/lib/libMinuit2.so, not found (try using -rpath or -rpath-link)
/home/christian/root/lib/libMinuit2.so: undefined reference to `TNamed::Compare(TObject const*) const'
/home/christian/root/lib/libMinuit2.so: undefined reference to `ROOT::AddClassAlternate(char const*, char const*)'
/home/christian/root/lib/libMinuit2.so: undefined reference to `TIsAProxy::TIsAProxy(std::type_info const&)'
/home/christian/root/lib/libMinuit2.so: undefined reference to `TObject::DrawClone(char const*) const'
/home/christian/root/lib/libMinuit2.so: undefined reference to `TObject::Browse(TBrowser*)'

etc. I know that all of those libraries are in /home/christian/root/lib, so I thought I would add the ones that the error says are missing, by running,

g++ -I/home/christian/root/include niminimzationExample.cpp -o niminimzationExample -L/home/christian/root/lib -lMinuit2 -lCore -lHist

but then I get the following error:

/usr/bin/ld: warning: libMathCore.so.6.22, needed by /home/christian/root/lib/libMinuit2.so, not found (try using -rpath or -rpath-link)
/usr/bin/ld: warning: libMatrix.so.6.22, needed by /home/christian/root/lib/libHist.so, not found (try using -rpath or -rpath-link)
/usr/bin/ld: warning: libRIO.so.6.22, needed by /home/christian/root/lib/libHist.so, not found (try using -rpath or -rpath-link)
/home/christian/root/lib/libHist.so: undefined reference to `TMath::CauchyDist(double, double, double)'
/home/christian/root/lib/libHist.so: undefined reference to `ROOT::Math::GaussIntegrator::IntegralUp(double)'
/home/christian/root/lib/libHist.so: undefined reference to `TMatrixTColumn_const<double>::TMatrixTColumn_const(TMatrixT<double> const&, int)'
/home/christian/root/lib/libHist.so: undefined reference to `ROOT::Math::RichardsonDerivator::Derivative3(ROOT::Math::IBaseFunctionOneDim const&, double, double)'
/home/christian/root/lib/libHist.so: undefined reference to `TMath::BesselK0(double)'

So I am missing other libraries. Is there a way to include all of the necessary libraries at once, without having to go through all of this? On my other computer I have a stand-alone version of Minuit2 nd I can run it simply with

g++ -I/home/christian/root/include -L/home/christian/root/lib niminimzationExample.cpp -o niminimzationExample -lMinuit2

Thanks.
Christian

_ROOT Version: 6.22.00
_Platform: Linux Mint
_Compiler: gcc

2 
`root-config --cxx --cflags` -o niminimzationExample niminimzationExample.cpp `root-config --libs` -lMinuit2
3

Thank you. But when I run that command it says

root-config: command not found
4

source /home/christian/root/bin/thisroot.sh

5

Thanks again. That fixed that part. However, not, after sourcing thisroot.sh I run the other command that you suggested and then

g++ -I/home/christian/root/include -L/home/christian/root/lib niminimzationExample.cpp -o niminimzationExample -lMinuit2

and I get the following error.

/home/christian/root/lib/libHist.so.6.22: undefined reference to `exp@GLIBC_2.29'
/home/christian/root/lib/libMinuit2.so: undefined reference to `log@GLIBC_2.29'
/home/christian/root/lib/libMinuit2.so: undefined reference to `pow@GLIBC_2.29'
collect2: error: ld returned 1 exit status

Is there some library or something that I am missing?

Thanks again.

6

The “other command” that I “suggested” actually builds your executable (or does it return any errors?).

7

It returns the error

/home/christian/root/lib/libHist.so: undefined reference to `exp@GLIBC_2.29'
/home/christian/root/lib/libMinuit2.so: undefined reference to `log@GLIBC_2.29'
/home/christian/root/lib/libMinuit2.so: undefined reference to `pow@GLIBC_2.29'
collect2: error: ld returned 1 exit status
8

It seems to suggest that your ROOT binary distribution is not compatible with your Operating System.
Are you able to run “root”?
You could also try to explicitly say: ... -lMinuit2 -lm