* installing *source* package ‘mlpack’ ...
** package ‘mlpack’ successfully unpacked and MD5 sums checked
** using staged installation
** libs
using C++ compiler: ‘Apple clang version 14.0.0 (clang-1400.0.29.202)’
using SDK: ‘MacOSX11.3.sdk’
clang++ -arch arm64 -std=gnu++17 -I"/Library/Frameworks/R.framework/Resources/include" -DNDEBUG  -I'/Volumes/Builds/packages/big-sur-arm64/Rlib/4.4/Rcpp/include' -I'/Volumes/Builds/packages/big-sur-arm64/Rlib/4.4/RcppArmadillo/include' -I'/Volumes/Builds/packages/big-sur-arm64/Rlib/4.4/RcppEnsmallen/include' -I/opt/R/arm64/include   -I. -I../inst/include   -fPIC  -falign-functions=64 -Wall -g -O2   -c RcppExports.cpp -o RcppExports.o
In file included from RcppExports.cpp:4:
In file included from ./../inst/include/mlpack.h:22:
In file included from /Volumes/Builds/packages/big-sur-arm64/Rlib/4.4/RcppArmadillo/include/RcppArmadillo.h:32:
In file included from /Volumes/Builds/packages/big-sur-arm64/Rlib/4.4/RcppArmadillo/include/RcppArmadillo/interface/RcppArmadilloForward.h:57:
In file included from /Volumes/Builds/packages/big-sur-arm64/Rlib/4.4/RcppArmadillo/include/current/armadillo:26:
/Volumes/Builds/packages/big-sur-arm64/Rlib/4.4/RcppArmadillo/include/current/armadillo_bits/config.hpp:373:11: warning: NOTE: option ARMA_CRIPPLED_LAPACK is not supported [-W#pragma-messages]
  #pragma message ("NOTE: option ARMA_CRIPPLED_LAPACK is not supported")
          ^
In file included from RcppExports.cpp:4:
In file included from ./../inst/include/mlpack.h:34:
In file included from ../inst/include/mlpack/core.hpp:35:
In file included from ../inst/include/mlpack/prereqs.hpp:15:
../inst/include/mlpack/base.hpp:86:10: fatal error: 'armadillo' file not found
#include <armadillo>
         ^~~~~~~~~~~
1 warning and 1 error generated.
make: *** [RcppExports.o] Error 1
ERROR: compilation failed for package ‘mlpack’
* removing ‘/Volumes/Builds/packages/big-sur-arm64/results/4.4/mlpack.Rcheck/mlpack’