* installing *source* package ‘mdir’ ...
** package ‘mdir’ successfully unpacked and MD5 sums checked
** using staged installation
** libs
using C++ compiler: ‘Apple clang version 13.0.0 (clang-1300.0.29.30)’
using C++17
using SDK: ‘MacOSX11.3.sdk’
clang++ -arch arm64 -std=gnu++17 -I"/Library/Frameworks/R.framework/Resources/include" -DNDEBUG -DARMA_64BIT_WORD=1 -DARMA_WARN_LEVEL=0 -I'/Volumes/Builds/packages/big-sur-arm64/Rlib/4.3/Rcpp/include' -I'/Volumes/Builds/packages/big-sur-arm64/Rlib/4.3/RcppArmadillo/include' -I'/Volumes/Builds/packages/big-sur-arm64/Rlib/4.3/testthat/include' -I'/Volumes/Builds/packages/big-sur-arm64/Rlib/4.3/RcppParallel/include' -I/opt/R/arm64/include     -DRCPP_PARALLEL_USE_TBB=1 -fPIC  -falign-functions=64 -Wall -g -O2  -c RcppExports.cpp -o RcppExports.o
clang++ -arch arm64 -std=gnu++17 -I"/Library/Frameworks/R.framework/Resources/include" -DNDEBUG -DARMA_64BIT_WORD=1 -DARMA_WARN_LEVEL=0 -I'/Volumes/Builds/packages/big-sur-arm64/Rlib/4.3/Rcpp/include' -I'/Volumes/Builds/packages/big-sur-arm64/Rlib/4.3/RcppArmadillo/include' -I'/Volumes/Builds/packages/big-sur-arm64/Rlib/4.3/testthat/include' -I'/Volumes/Builds/packages/big-sur-arm64/Rlib/4.3/RcppParallel/include' -I/opt/R/arm64/include     -DRCPP_PARALLEL_USE_TBB=1 -fPIC  -falign-functions=64 -Wall -g -O2  -c categorical.cpp -o categorical.o
clang++ -arch arm64 -std=gnu++17 -I"/Library/Frameworks/R.framework/Resources/include" -DNDEBUG -DARMA_64BIT_WORD=1 -DARMA_WARN_LEVEL=0 -I'/Volumes/Builds/packages/big-sur-arm64/Rlib/4.3/Rcpp/include' -I'/Volumes/Builds/packages/big-sur-arm64/Rlib/4.3/RcppArmadillo/include' -I'/Volumes/Builds/packages/big-sur-arm64/Rlib/4.3/testthat/include' -I'/Volumes/Builds/packages/big-sur-arm64/Rlib/4.3/RcppParallel/include' -I/opt/R/arm64/include     -DRCPP_PARALLEL_USE_TBB=1 -fPIC  -falign-functions=64 -Wall -g -O2  -c createSimilarityMat.cpp -o createSimilarityMat.o
clang++ -arch arm64 -std=gnu++17 -I"/Library/Frameworks/R.framework/Resources/include" -DNDEBUG -DARMA_64BIT_WORD=1 -DARMA_WARN_LEVEL=0 -I'/Volumes/Builds/packages/big-sur-arm64/Rlib/4.3/Rcpp/include' -I'/Volumes/Builds/packages/big-sur-arm64/Rlib/4.3/RcppArmadillo/include' -I'/Volumes/Builds/packages/big-sur-arm64/Rlib/4.3/testthat/include' -I'/Volumes/Builds/packages/big-sur-arm64/Rlib/4.3/RcppParallel/include' -I/opt/R/arm64/include     -DRCPP_PARALLEL_USE_TBB=1 -fPIC  -falign-functions=64 -Wall -g -O2  -c density.cpp -o density.o
density.cpp:49:10: error: no member named 'execution' in namespace 'std'; did you mean 'exception'?
    std::execution::par,
    ~~~~~^~~~~~~~~
         exception
/Library/Developer/CommandLineTools/SDKs/MacOSX11.sdk/usr/include/c++/v1/exception:97:29: note: 'exception' declared here
class _LIBCPP_EXCEPTION_ABI exception
                            ^
density.cpp:49:21: error: no member named 'par' in 'std::exception'
    std::execution::par,
    ~~~~~~~~~~~~~~~~^
2 errors generated.
make: *** [density.o] Error 1
ERROR: compilation failed for package ‘mdir’
* removing ‘/Volumes/Builds/packages/big-sur-arm64/results/4.3/mdir.Rcheck/mdir’