* installing *source* package ‘rgl’ ...
** package ‘rgl’ successfully unpacked and MD5 sums checked
** using staged installation
checking for gcc... clang -arch arm64
checking whether the C compiler works... no
configure: error: in `/Volumes/Builds/packages/big-sur-arm64/results/4.4/rgl.Rcheck/00_pkg_src/rgl':
configure: error: C compiler cannot create executables
See `config.log' for more details
ERROR: configuration failed for package ‘rgl’
* removing ‘/Volumes/Builds/packages/big-sur-arm64/results/4.4/rgl.Rcheck/rgl’