cd /path/to/nco
tar xvf nco-5.1.4.tar.gz
cd nco-5.1.4
export PATH=/path/to/antlr/bin:/path/to/gsl/bin:/path/to/netcdf/bin:$PATH export NETCDF_INC=/path/to/netcdf/include export NETCDF_LIB=/path/to/netcdf/lib export NETCDF_ROOT=/path/to/netcdf export UDUNITS2_PATH=/path/to/udunits export ANTLR_PATH=/path/to/antlr
export CC=clang CXX=clang++ FC=flang ./configure --prefix=/path/to/nco CPPFLAGS="-I${ANTLR_PATH}/include -I${UDUNITS_PATH}/include" CFLAGS="-L${ANTLR_PATH}/lib -I${NETCDF_PATH}/include -I${UDUNITS_PATH}/include -L${UDUNITS_PATH}/lib" make -j make install