This file documents the port of Mercury to Linux on AArch64 (ARM64)
(i.e. the aarch64*-linux* configuration).
Mercury should build and install "out-of-the-box" on Linux for AArch64.
Low-level C grades using non-local gotos, i.e. asm_fast.*, do not work
with GCC 9 or later. Non-PIC (position-independent code) actually does
still work, but PIC is commonly the default.
If you require a low-level C grade, please use a reg.* grade.