From: Mark Bennett <mark@...>
Date: 2005-01-11T06:22:17+09:00
Subject: Problems Using rb-gsl

I'm trying to use rb-gsl in an application I'm writing and am able to 
use it on Mac OS X but not Linux.  On an old Red Hat 7.3 box I see the 
following error messages when compiling use, 'ruby setup.rb setup':

gcc -fPIC -I../include -Wall -I/usr/local/include  -I. 
-I/usr/local/lib/ruby/1.8/i686-linux 
-I/usr/local/lib/ruby/1.8/i686-linux 
-I/home/mark/versioned/praxis/sbcalc/third_party/rb-gsl-1.6.0/ext   -c 
wavelet.c
cc1: warning: changing search order for system directory 
"/usr/local/include"
cc1: warning:   as it has already been specified as a non-system directory

It says this for all files being compiled.  When I try to run any of the 
sample applications included with rb-gsl I see the message:

/usr/local/lib/ruby/site_ruby/1.8/i686-linux/rb_gsl.so: libgsl.so.0: 
cannot open shared object file: No such file or directory - 
/usr/local/lib/ruby/site_ruby/1.8/i686-linux/rb_gsl.so (LoadError)
        from /usr/local/lib/ruby/site_ruby/1.8/gsl.rb:1
        from cheb.rb:2:in `require'
        from cheb.rb:2

This same procedure works just find on my Mac.  I've run ldconfig to 
make sure all my GSL libraries are found, and I run 'make test' after 
installing GSL.  All tests passed.

Does anyone out there have a suggestion for what to do?

Thanks!

-Mark