[R-sig-Geo] rgdal on Mac OS X 10.6.7

[Roger Bivand]

On Wed, 25 May 2011, Ralf Schäfer wrote:

> Dear list,
>
> I tried to install rgdal in R 2.13.0 on Mac OS X 10.6.7 but it keeps 
> failing no matter if I install from source or binary.

You have not said how you installed rgdal - CRAN extras binary, Kyngchaos 
binary on Kyngchaos frameworks, source install on Kyngchaos frameworks, or 
source on GDAL source build.

The dependency is not from rgdal directly, but rather from GDAL as loaded 
by rgdal.

The standard OSX install is to use the binary package directly, by 
ensuring that the CRAN extras repository is being searched:

setRepositories(ind=1:2)
install.packages("rgdal")

This installs rgdal independently of any GDAL on your platform, just like 
the Windows binary package. Only standard GDAL/OGR drivers are available. 
This is probably not what you did, because any GDAL on your machine and 
rgdal do not interact.

If more drivers are needed, install the Kyngchaos frameworks, then the 
Kyngchaos rgdal binary. The Kyngchaos GDAL build determines the available 
drivers.

Equivalently, but with the full Xcode/R build train installed, you can 
install from source on top of the Kyngchaos frameworks. Source or binary 
installs interact with the Kyngchaos framework GDAL, so the same problem 
should occur in other applications loading GDAL.

Roger

>
> I get the following error message:
> Error in dyn.load(file, DLLpath = DLLpath, ...) :
>  kann shared object '/Users/ralfs/Library/R/2.13/library/rgdal/libs/x86_64/rgdal.so' nicht laden:
>  dlopen(/Users/ralfs/Library/R/2.13/library/rgdal/libs/x86_64/rgdal.so, 6): Symbol not found: _GetPrivateProfileString
>  Referenced from: /usr/lib/libiodbc.2.dylib
>  Expected in: flat namespace
>
> System info:
> R version 2.13.0 Patched (2011-04-14 r55450)
> Platform: x86_64-apple-darwin9.8.0/x86_64 (64-bit)
>
> Any idea how to fix this - is obviously somehow related to the iodbc driver or sth...
>
> Thanks in advance
> Ralf
>
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-- 
Roger Bivand
Economic Geography Section, Department of Economics, Norwegian School of
Economics and Business Administration, Helleveien 30, N-5045 Bergen,
Norway. voice: +47 55 95 93 55; fax +47 55 95 95 43
e-mail: Roger.Bivand at nhh.no