Unable to install random Forest package

[anjana3]

install.packages("randomForest") Installing package into ‘/home/anjana/R/x86_64-pc-linux-gnu-library/3.4’ (as ‘lib’ is unspecified) trying URL 'https://cloud.r-project.org/src/contrib/randomForest_4.6-14.tar.gz' Content type 'application/x-gzip' length 80074 bytes (78 KB)

downloaded 78 KB

• installing source package ‘randomForest’ ... package ‘randomForest’ successfully unpacked and MD5 sums checked libs gcc -std=gnu99 -I/usr/share/R/include -DNDEBUG -fpic -g -O2 -fstack-protector-strong -Wformat -Werror=format-security -Wdate-time -D_FORTIFY_SOURCE=2 -g -c classTree.c -o classTree.o gcc -std=gnu99 -I/usr/share/R/include -DNDEBUG -fpic -g -O2 -fstack-protector-strong -Wformat -Werror=format-security -Wdate-time -D_FORTIFY_SOURCE=2 -g -c init.c -o init.o gcc -std=gnu99 -I/usr/share/R/include -DNDEBUG -fpic -g -O2 -fstack-protector-strong -Wformat -Werror=format-security -Wdate-time -D_FORTIFY_SOURCE=2 -g -c regTree.c -o regTree.o gcc -std=gnu99 -I/usr/share/R/include -DNDEBUG -fpic -g -O2 -fstack-protector-strong -Wformat -Werror=format-security -Wdate-time -D_FORTIFY_SOURCE=2 -g -c regrf.c -o regrf.o gcc -std=gnu99 -I/usr/share/R/include -DNDEBUG -fpic -g -O2 -fstack-protector-strong -Wformat -Werror=format-security -Wdate-time -D_FORTIFY_SOURCE=2 -g -c rf.c -o rf.o gfortran -fpic -g -O2 -fstack-protector-strong -c rfsub.f -o rfsub.o /bin/bash: gfortran: command not found /usr/lib/R/etc/Makeconf:182: recipe for target 'rfsub.o' failed make: *** [rfsub.o] Error 127 ERROR: compilation failed for package ‘randomForest’
• removing ‘/home/anjana/R/x86_64-pc-linux-gnu-library/3.4/randomForest’ Warning in install.packages : installation of package ‘randomForest’ had non-zero exit status

[anjana3]

i am getting that random forest unable to install error plz can any on help me with the solution .

Thanks in advance