[Help-gsl] Help - gslwrap

[M. F. Randrianandrasana]

Hi,
I've tried to compile this simple program main.cpp:

      1#include<gslwrap/matrix_double.h>
      2
      3
      4 main()
      5 {
      6    gsl::matrix a(3,3);
      7    gsl::matrix b(3,3);
      8 }

using this compilation line: g++ -I/usr/local/include -L/usr/local/lib 
-lgslwrap -o prog main.cpp

and it gives me some errors:
/tmp/ccBXJabq.o: In function `main':
/tmp/ccBXJabq.o(.text+0x15): undefined reference to 
`gsl::matrix::matrix(unsigned int, unsigned int, bool)'
/tmp/ccBXJabq.o(.text+0x2d): undefined reference to 
`gsl::matrix::matrix(unsigned int, unsigned int, bool)'
/tmp/ccBXJabq.o(.text+0x40): undefined reference to 
`gsl::matrix::~matrix(void)'
/tmp/ccBXJabq.o(.text+0x51): undefined reference to 
`gsl::matrix::~matrix(void)'
/tmp/ccBXJabq.o(.text+0x6a): undefined reference to 
`gsl::matrix::~matrix(void)'
collect2: ld returned 1 exit status.

I've ve checked the header files, which are in the /usr/local/include 
directory, but there is nothing wrong with them. The library libgslwrap.a is 
in the /usr/local/lib directory.
I'm using the version 1.8 of gsl, the latest version of gslwrap, the version 
2.96 of g++ and the version 2.11.93.0.2 20020207 of ld.

Thanks in advance!