qawo-problem and a book project

[Brian Gough]

M Atakan Gurkan writes:
 > Is this really true? If I write a program and use GSL routines in
 > it and distribute only the source, as it would be in a book, I am
 > not copying GSL but only using it. I thought one needed to provide
 > the program under GPL if that program _includes_ GPL'ed code to
 > some extent. The source, possibly, does not contain GPL'ed code.

Copyright law considers "derivative works" rather than inclusion, and
if the program needs to use GSL then it's a derivative work.

best regards
-- 
Brian