* installing *source* package ‘gGnome’ ... ** using staged installation configure working dir: /tmp/Rtmpjqjs5b/R.INSTALL3387654f56a72/gGnome CPLEX_DIR environment variable not set, please set (e.g. ~/Path/To/CPLEX_Studio/) prior to installing in order to install gGnome with CPLEX functionality ** libs using C compiler: ‘gcc (GCC) 7.3.0’ gcc -I"/root/R/lib/R/include" -DNDEBUG -I/cplex/include -I/usr/local/include -m64 -fPIC -fno-strict-aliasing -fPIC -g -O2 -c Rcplex2.c -o Rcplex2.o gcc: error: unrecognized command line option ‘-m64’ make: *** [/root/R/lib/R/etc/Makeconf:191: Rcplex2.o] Error 1 ERROR: compilation failed for package ‘gGnome’ * removing ‘/root/R/lib/R/library/gGnome’
