[GRASS-stats] problem installing spgrass6 in R

[Tim Holland]

Dear Roger, 

I am sorry to keep asking for your time, but I have (what I hope is) a
fairly simple question if you have a moment.  

I reinstalled everything from scratch, using all binaries from KyngChaos and
what I think was the correct order of installation.  And I still had the
same problem with spgrass6 and rgdal failing on installation.  So now I want
to try what you suggested about using the configure arguments in
install.packages.  

In GRASS, I did the following

GRASS 6.4.0RC5 (mapset):~ > gdal-config --libs
-L/Library/Frameworks/GDAL.framework/Versions/1.6/unix/lib -lgdal
GRASS 6.4.0RC5 (mapset):~ > gdal-config --cflags
-I/Library/Frameworks/GDAL.framework/Versions/1.6/Headers

I then wanted to use those paths in R in install.packages.  I tried

>install.packages("spgrass6", type="source", dependencies=TRUE,
configure.args=c("-L/Library/Frameworks/GDAL.framework/Versions/1.6/unix/lib
-lgdal","-I/Library/Frameworks/GDAL.framework/Versions/1.6/Headers"))

However, I ended up with the same error messages as always regarding
spgrass6 and rgdal failing to install.  Was I doing the right thing with
'configure.args'?  Was that the right syntax / the right elements? 

Thanks for the help, 
Best, 
Tim



Tim,

One way of handling this might be - if you will only use rgdal from 
"within" GRASS, is to run the install from the rgdal source package in 
that environment. Alternatively, use gdal-config within GRASS to find the 
the GDAL libs (--libs) and headers (--cflags) strings to pass to the 
configure arguments in install.packages() in R outside GRASS. Here rgdal 
will fail after installation if the GDAL shared objects are not on the 
PATH R can see.

Hope this helps,

Roger


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