[GRASS-dev] gmath and gpde update

[Soeren Gebbert]

2009/1/13 Glynn Clements <glynn at gclements.plus.com>

>
> Moritz Lennert wrote:
>
> > Either make meschach a dependency, as Glynn suggested, thus just linking
> > to it which, AFAIU, does not violate GPL, and which has the added
> > (important) advantage that we do not have to maintain the code. Or
> > convince the meschach developers to relicense.
>
> AFAIK, distributing binaries of GRASS which are linked against
> meschach is a violation of the GPL, the same as linking against e.g.
> DWG.
>
> In some cases, it may be possible to rely upon the "part of the OS"
> exemption for distributions which include a meschach package. But not
> all distributions include meschach (Gentoo doesn't have an ebuild for
> it).
>
> The situation is a bit different for v.in.dwg, as that's a
> non-essential package, while the gmath library is quite important. Any
> use of meschach would have to be implemented in such a way that
> existing functionality isn't lost in versions built without.


Thats the point. Many grass modules depend on libgmath. We cannot only write
a
wrapper for meschach and remove the existing nr algorithms. We need to
replace
the nr algorithm with something new and then optionally provide a wrapper
for meschach.
Additionally a unified interface must be implemented, because the grass
modules should not care if
meschach or the standard grass implementation is used.

Thats a lot of work.


>
>
> --
> Glynn Clements <glynn at gclements.plus.com>
>
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