Re: [Help-gsl] Problems linking - Undefined symbol

[Brian Gough]

Stephan Klatt writes:
 > I want to use gsl_matrix. So I included <gsl/gsl_matrix.h> in my
 > program code and wrote
 > gsl_matrix *m = gsl_matrix_alloc(3,3);
 > just like in the example program of the manual. Compiling is no problem,
 > but when I try to link, I get the error message
 > "Undefined Symbol gsl_matrix_alloc; first referenced in file testing.o"
 > How can that be? Thanks for any help!

Hello,

You need to link against the GSL libraries using -l flags. See the GSL
Reference Manual chapter on "Using the Library", or my tutorial book on
GCC ("An Introduction to GCC") for full details:
http://www.network-theory.co.uk/gcc/intro/

regards

-- 
Brian Gough
(GSL Maintainer)

Network Theory Ltd,
Commercial support for GSL --- http://www.network-theory.co.uk/gsl/