* installing *source* package ‘MPCR’ ...
** this is package ‘MPCR’ version ‘2.1.1’
** package ‘MPCR’ successfully unpacked and MD5 sums checked
** using staged installation
/Volumes/Builds/packages/big-sur-arm64/results/4.5/MPCR.Rcheck/00_pkg_src/MPCR/
./configure: line 40: cmake: command not found
make: *** No rule to make target `clean'.  Stop.
make: *** No rule to make target `all'.  Stop.
cp: /Volumes/Builds/packages/big-sur-arm64/results/4.5/MPCR.Rcheck/00_pkg_src/MPCR//bin/src/libmpcr.dylib: No such file or directory
Failed: libmpcr.dylib -> src
** libs
make: Nothing to be done for `all'.
** R
** inst
** byte-compile and prepare package for lazy loading
** help
*** installing help indices
** building package indices
** installing vignettes
** testing if installed package can be loaded from temporary location
Error: package or namespace load failed for ‘MPCR’ in library.dynam(lib, package, package.lib):
 shared object ‘MPCR.so’ not found
Error: loading failed
Execution halted
ERROR: loading failed
* removing ‘/Volumes/Builds/packages/big-sur-arm64/results/4.5/MPCR.Rcheck/MPCR’