How did you install R?
This looks like an issue where R was built wiht g77 bu that is no
longer present.
A system using gcc 4.1.2 should be using gfortran not g77 (for
compatibility).
R 2.7.1 is obsolete: I suggest you install a current R from the
sources (or a source RPM).
On Tue, 20 Jan 2009, Richard Yanicky wrote:
I have search the help archives and can't find a direct reference to the
following issue:
When installing randomForest on under CentOS 5.2 , R version 2.7.1 with gcc
4.1.2.
We receive the following error (see below, can't find ?lg2c) it is in the
path!
r...@abcsci12 ~]# R CMD INSTALL
/scisys/home/yanicrk/randomForest_4.5-28.tar.gz
* Installing to library '/usr/lib64/R/library'
* Installing *source* package 'randomForest' ...
** libs
gcc -I/usr/lib64/R/include -I/usr/local/include -fpic -O2 -g -std=gnu99
-c classTree.c -o classTree.o
gcc -I/usr/lib64/R/include -I/usr/local/include -fpic -O2 -g -std=gnu99
-c regrf.c -o regrf.o
gcc -I/usr/lib64/R/include -I/usr/local/include -fpic -O2 -g -std=gnu99
-c regTree.c -o regTree.o
gcc -I/usr/lib64/R/include -I/usr/local/include -fpic -O2 -g -std=gnu99
-c rf.c -o rf.o
g77 -fpic -O2 -g -c rfsub.f -o rfsub.o
gcc -I/usr/lib64/R/include -I/usr/local/include -fpic -O2 -g -std=gnu99
-c rfutils.c -o rfutils.o
gcc -shared -Wl,-O1 -o randomForest.so classTree.o regrf.o regTree.o rf.o
rfsub.o rfutils.o -lg2c -lm -L/usr/lib64/R/lib -lR
/usr/bin/ld: cannot find -lg2c
collect2: ld returned 1 exit status
make: *** [randomForest.so] Error 1
ERROR: compilation failed for package 'randomForest'
** Removing '/usr/lib64/R/library/randomForest'
Any assistance would be greatly appreciated.
Rich
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--
Brian D. Ripley, rip...@stats.ox.ac.uk
Professor of Applied Statistics, http://www.stats.ox.ac.uk/~ripley/
University of Oxford, Tel: +44 1865 272861 (self)
1 South Parks Road, +44 1865 272866 (PA)
Oxford OX1 3TG, UK Fax: +44 1865 272595
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