Compilers for the M1 produce position-independent code by default.
Issuing '-fno-pie' on the command line emits an innocuous warning.

The present implementation checks on the compiler's capabilities only if
the chip is not arm64.

Clang++ version is:

   $  clang++ --version
   Apple clang version 13.0.0 (clang-1300.0.27.3)
   Target: arm64-apple-darwin21.5.0