[Debian-med-packaging] Bug#701756: njplot: does not link directly used libm

[Julian Taylor]

Package: njplot
Version: 2.4-1
Severity: important
Tags: patch
User: peter.fritzsche at gmx.de
Usertags: no-add-needed

njplot uses symbols from libm but does not link with it explicitly,
instead if relies on indirect linkage.
This causes a build error with ld --no-copy-dt-needed in ubuntu.
In principle it should also fail in debian which also uses the flag but
doesn't, I don't know why.

In order to keep the package in good shape for the future please also
fix the issue in the debian package.
A patch by Graham Inggs is available in the ubuntu bug
https://bugs.launchpad.net/ubuntu/+source/njplot/+bug/1133488

Thanks for considering the patch.