[R] rgdal installation with two versions of GDAL

Rob Skelly rob at dijital.ca
Wed Apr 22 06:43:19 CEST 2015


I am using GDAL 2.0 for most of my work, but rgdal depends on GDAL < 2. I
have built and installed GDAL 1.11.2 in /opt/gdal-1.11.2, and rgdal
compiles and installs into R, using the following command:


However when R attempts to load rgdal at the end of the installation, it
fails with the error,

Error in dyn.load(file, DLLpath = DLLpath, ...) :
  unable to load shared object
  /usr/local/lib/R/site-library/rgdal/libs/rgdal.so: undefined symbol:

The addRing method on OGRPolygon seems to be a relic of GDAL 1.11.2 and no
longer exists in 2.0, so R is loading libgdal from /usr/local/lib, not
/opt/gdal-1.11.2/lib. I have confirmed this by temporarily moving the
1.11.2 libs into /usr/local, where it works fine.

So, the question is, how to I convince R to use the new library search
path? I'm on xubuntu, and R is installed using apt.


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