PKG_LIBS = `$(R_HOME)/bin/Rscript -e "RcppGSL::LdFlags()"` \
  `$(R_HOME)/bin/Rscript -e "RcppParallel::LdFlags()"` \
  `$(R_HOME)/bin/Rscript -e "RcppParallel::RcppParallelLibs()"`
CXX_STD = CXX20
