Re: GDAL 1.8 and QGIS

[Mathieu Basille <basille@ase-research.org>]

Dear all,

It seems that using QGIS built on GDAL 1.8 is not an easy way! As stated 
before, I was able to install gdal (i.e. gdal-bin and libgdal1-1.8.0) in 
version 1.8.

However, QGIS requires libgdal1-dev to be installed, and I can't get to 
have it installed in version 1.8. Here is what I tried, after purging 
every gdal and qgis packages:

# aptitude install -t experimental gdal-bin libgdal1-dev
The following NEW packages will be installed:
  gdal-bin libdap-dev{a} libdap11{ab} libepsilon0{a} libgdal1-1.8.0{a}
  libgdal1-dev libgif-dev{a} libhdf4-0-alt{a} libhdf4-alt-dev{a}
  libhdf5-serial-1.8.4{a} libhdf5-serial-dev{a} libjasper-dev{a}
  libjpeg62-dev{a} libltdl-dev{a} libmysqlclient-dev{a} libnetcdf-dev{a}
  libnetcdf6{a} libodbcinstq1c2{a} libogdi3.2{a} libqt3-mt{a}
  libspatialite-dev{a} libspatialite2{a} libsqlite3-dev{a} libtool{a}
  libxerces-c2-dev{a} libxerces-c28{a} unixodbc-dev{a}
0 packages upgraded, 27 newly installed, 0 to remove and 201 not upgraded.
Need to get 19.3 MB/28.9 MB of archives. After unpacking 110 MB will be 
used.
The following packages have unmet dependencies:
  libdap11: Conflicts: libdap10 but 3.9.3-6 is installed.
            Breaks: libdap10 but 3.9.3-6 is installed.
  libjpeg8-dev: Conflicts: libjpeg62-dev but 6b1-2 is to be installed.
The following actions will resolve these dependencies:

     Keep the following packages at their current version:
1)     libdap-dev [Not Installed]
2)     libdap11 [Not Installed]
3)     libgdal1-dev [Not Installed]
4)     libjpeg62-dev [Not Installed]

... which is definitely not what I want (it seems that I need 
libgdal1-dev). I tried other solutions proposed by aptitude, but all 
involve not installing libgdal1-dev. I searched a bit around trying to 
resolve this problem, by installing libdap11 or libjpeg62-dev from 
experimental, but could not find a way which would not break parts of 
the system that I'd rather not touch (why should I unstall r-base-dev??).

Once again, is there something that I'm missing?

Thanks a lot in advance for any advice or hint that could help me out!
Mathieu.


Le 28/08/2011 11:33, Mathieu Basille a écrit :
> Dear Andrew,
>
> Alright, that makes perfect sense. This means I can have as many
> versions of libgdal1 as needed, e.g. by other software (QGIS, PostGIS,
> etc., including gdal-bin).
>
> I'll thus proceed with the installation of QGIS from source, built on
> libgdal1-1.8.0. I'll let you know if I succeed or not!
>
> Thanks a lot for your answers!
> Mathieu.
>
>
> Le 28/08/2011 01:11, Andrew Harvey a écrit :
> > On Sun, Aug 28, 2011 at 2:36 PM, Mathieu Basille
> > <basille@ase-research.org> wrote:
> > > Dear Jürgen,
> > >
> > > Thank you for your answer.
> > >
> > > I started by installing GDAL 1.8 from experimental, but now I'm a
> > > little bit
> > > confused about GDAL. What exactly is the difference between
> > > 'gdal-bin' and
> > > 'libgdal1-1.X.0' (where X can be 6, 7, or 8)?
> > >
> > > I noticed I could install all three versions of libgdal1 together,
> > > without
> > > any dependency trouble, but I have to choose the version of gdal-bin.
> > > Am I
> > > right to think that only the latter (gdal-bin) defines the version of
> > > GDAL
> > > used by the system? In other words, the programs shipped with
> > > gdal-bin uses
> > > the libgdal1 corresponding to the gdal-bin version and do not care about
> > > other versions.
> > >
> > > Or did I miss something? The package 'qgis' depends on libgdal1-1.7.0
> > > but
> > > does not care about gdal-bin, which means that I can have QGIS installed
> > > with gdal-bin version 1.8 (from experimental), but QGIS not using gdal
> > > 1.8...
> >
> > Someone else could probably explain this better, but I'll give it a shot.
> >
> > GDAL is a library which other programs can leverage, this is the
> > libgdal* packages. If you have multiple libgdal packages installed
> > they won't interfere and applications are usually set to use a certain
> > version of the library.
> >
> > But GDAL also ships with some command line utilities like gdalwarp,
> > gdalinfo, etc. which are in the gdal-bin package. The version of
> > gdal-bin controls which version of these utilities are installed (and
> > which gdal library version the utilities use)

--

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Mathieu Basille, Post-Doc

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Laboratoire d'Écologie Comportementale et de Conservation de la Faune
+ Centre d'Étude de la Forêt
Département de Biologie
Université Laval, Québec

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http://ase-research.org/basille

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``If you can't win by reason, go for volume.''
Calvin, by Bill Watterson.