Armadillo library error

[guidattoli]

Hello,

I'm having some problems using Armadillo library..
I installed armadillo, lapack and blas by apt-get
apt-get install libblas-dev apt-get install liblapack-dev apt-get install libarmadillo-dev

And compile the codes like that

g++ -Wall -c test.cpp -O1 -larmadillo -llapack -lblas
g++ -Wall -o test test.o

I have no problems with basic codes like

#include <iostream>
#include <armadillo>

 
using namespace std;
using namespace arma;
 
int main()
{
		mat m;
		vec eigval;
		m << 1 << 1 << endr
		  << 1 << 1 << endr;
		cout << m << endl;
 
  return 0;
}

But if I need to use some decomposition or factorisation (ex: eig_sym(eigval, m);)
i got the linker error:
undefined reference to `wrapper_cheev_'
Anyone can help me?

[koothkeeper]

You need to add the libraries to your second line, where you are linking the program named 'test', not the first.

Also, you might rename your program: The command 'test' is already a command in Unix/Linux.