在Rstudio中使用RcppArmadillo创建一个R包会遇到错误“对dsyev的未定义引用”

I am trying to figure out an error that stopped me from making an R package "whyNotWork" using RcppArmadillo. The package contains only one .cpp file with one simple function which returns the eigen values of a matrix:I am trying to figure out an error that stopped