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!



root@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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