I am trying to install samr package on a macOS system R v3.4, but I get this warning message "Warning in install.packages :
installation of package ‘samr’ had non-zero exit status.
Consequently, R doesn't recognize the command library(samr)
What should I do to handle this problem ?
Here is the full warning message:
Package which is only available in source form, and may need compilation of
Do you want to attempt to install these from sources?
installing the source package ‘samr’
trying URL 'https://cran.rstudio.com/src/contrib/samr_2.0.tar.gz'
Content type 'application/x-gzip' length 36702 bytes (35 KB)
downloaded 35 KB
* installing *source* package ‘samr’ ...
gfortran -fPIC -g -O2 -c rankcol.f -o rankcol.o
make: gfortran: No such file or directory
make: *** [rankcol.o] Error 1
ERROR: compilation failed for package ‘samr’
* removing ‘/Library/Frameworks/R.framework/Versions/3.4/Resources/library/samr’
Warning in install.packages :
installation of package ‘samr’ had non-zero exit status