Confused about ARM64 cross-compilation

[Timur Tabi]

I am brand new to the FreeBSD world, and I'm trying to debug problems
in booting FreeBSD on a new ARM64 system with ACPI.

I've installed FreeBSD 11 on an x86 system, and I followed the
instructions on https://wiki.freebsd.org/FreeBSD/arm/crossbuild to
download the source code.  Then I download arm64_build.sh from
https://wiki.freebsd.org/arm64 and run that.  Now it's building
something, but I don't know what it's doing.  Shouldn't I need to
install a cross-compiler first?

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