Trouble installing rgdal --- libcurl.4.dylib

Hello everyone,

I have trouble installing the rgdal package.
I run R 2.15.0 on Mac OS 10.6.8.

I followed the instructions given by Roger Bivand, who develops rgdal and ran:

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

--- SVP s?lectionner un miroir CRAN pour cette session ---
essai de l'URL 'http://www.stats.ox.ac.uk/pub/RWin/bin/macosx/leopard/contrib/2.15/rgdal_0.7-8.tgz'
Content type 'application/x-gzip' length 13810017 bytes (13.2 Mb)
URL ouverte
==================================================
downloaded 13.2 Mb

It seemed to be OK, but when I try to call rgdal, I get:

library(rgdal)

Error in dyn.load(file, DLLpath = DLLpath, ...) :
 impossible de charger l'objet partag? '/Library/Frameworks/R.framework/Versions/2.15/Resources/library/rgdal/libs/i386/rgdal.so':
 dlopen(/Library/Frameworks/R.framework/Versions/2.15/Resources/library/rgdal/libs/i386/rgdal.so, 6): Library not loaded: /usr/lib/libcurl.4.dylib
 Referenced from: /Library/Frameworks/R.framework/Versions/2.15/Resources/library/rgdal/libs/i386/rgdal.so
 Reason: Incompatible library version: rgdal.so requires version 7.0.0 or later, but libcurl.4.dylib provides version 6.0.0
Erreur : le chargement du package / espace de noms a ?chou? pour ?rgdal?

It seems that the problem comes from libcurl.4.dylib.

Does anyone know what I should do?

Thank you very much,
Pierre.


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