Added conditional to check R_LIBS environment variable.
Added conditional to check R_LIBS environment variable.
USGS-R/repgen,mhines-usgs/repgen,dpattermann-usgs/repgen,mhines-usgs/repgen,USGS-R/repgen,zmoore-usgs/repgen,thongsav-usgs/repgen,lindsaycarr/repgen,thongsav-usgs/repgen,lindsaycarr/repgen,lindsaycarr/repgen,thongsav-usgs/repgen,mhines-usgs/repgen,USGS-R/repgen,dpattermann-usgs/repgen,dpattermann-usgs/repgen,zmoore-usgs/repgen,zmoore-usgs/repgen