Add cross-compilation for Mac and Linux ARM systems by alandavidreyes · Pull Request #13 · lmdbjava/native

This change passes the relevant "-arch" flags into Clang to allow cross
compiling of the underlying LMDB library using Clang. This creates
binaries for Apple Silicon and ARM-based Linux processors (such as EC2's
Graviton) that can be used by the parent library.

Some Linux/BSD systems use aarch64, others use arm64 to refer to the
underlying ARM architecture. The previous version of this branch
referred to that as aarch64. Given that there is some debate as to
what that architecture is called, it seems nicer to use the naming
convention that matches that used by Mac systems.