[Build system] Allow the runtime to be compiled on macOS in parallel and using ld64
.
#232
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Context: macOS lacks
nproc
and uses a different loader.Description of the Change: Determine how many processors are available on an Apple machine via
sysctl
) to replacenproc
. Use an-all_load
instead of--whole-archive
.Benefits: Improved portability, we can compile the runtime on macOS.