[Help-gsl] Building a shared library that links with GSL

[Joseph Wakeling]

I'm building a small simulation library that makes use of some GSL
functions.  However, I'm a novice with autotools and I'm having some
trouble working out how to check that GSL is installed and its header
files are in place.

What lines do I need to add to configure.ac to make sure that GSL is
present and correct with necessary files for development?

Secondly, do I need to reference -lgsl -lgslcblas when compiling my
library, or can I leave this in the hands of the person compiling a
program that makes use of it?  I have created an appropriate .pc file
for pkg-config.

Many thanks,

    -- Joe