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Re: Update to Osmium packages

On Tue, Aug 18, 2015 at 09:20:56PM +0200, Sebastiaan Couwenberg wrote:
> On 18-08-15 21:13, Jochen Topf wrote:
> > On Tue, Aug 18, 2015 at 03:45:19PM +0200, Sebastiaan Couwenberg wrote:
> >> On 18-08-15 14:04, Jochen Topf wrote:
> >>> I have just released new versions of libosmium, pyosmium, osmium-tool, and
> >>> osmcoastline. The largest difference is that libosmium now uses a different
> >>> pbf library which is included in the repository. This means the protobuf
> >>> and osmpbf dependencies are gone.
> >>
> >> I've updated the libosmium package accordingly, but it cannot be built
> >> in unstable currently because gdal has not been rebuilt for the libdap
> >> GCC 5 transition yet. Those transitions ongoing so I'll upload the
> >> packages as soon as possible.
> > 
> > Okay.
> > 
> > I saw you added Depends: on a lot of -dev packages. I think those should only
> > be Recommends: or so, because to use libosmium you don't need them all, just
> > the ones you need for whatever parts of the library you use. We could further
> > split those up into the ones you need most often and those you only need for
> > special cases. See
> > https://github.com/osmcode/libosmium/wiki/Libosmium-dependencies
> All of them may be needed, so I've added them all. Installing
> libosmium2-dev will get you the headers for everything it can use. Since
> it's a header-only library the package built with it will still only
> depend on the libraries it actually uses.
> I've fixed the missing dependencies because osmcoastline failed to build
> due to missing boost iterator headers. We haven't hit the other cases
> yet, or those were pull in by other build dependencies already.
> Because the buildds don't install Recommends by default, so only using
> Depends is a better option.

Do we want to force users to get all those packages they might not need?
There are some huge dependencies like GDAL and GEOS which many people will
not need otherwise.

And the missing dependency for osmcoastline is easily solved by adding it
to osmcoastline.

Maybe we should take out GDAL and GEOS and leave the rest in. For the other
libraries it can happen that you are calling libosmium functions and it
decides "behind the scenes" that it needs those libraries. But if you are
using the GDAL or GEOS functions in libosmium you will also have GDAL or
GEOS code in your application. This is not something that can happen "by
accident". On the other hand, you *will* need to add to add any of those
libraries to the build configuration of your application, so there is no
way you are not going to be aware of it anyway.

Jochen Topf  jochen@remote.org  http://www.jochentopf.com/  +49-351-31778688

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