dsymutil is not available during builds. This is disabled by turning off
split-debuginfo.
Bug: 349612831
Bug: 351760165
Test: Pre/post submit
Change-Id: Idd6f00519e303fe02b35ec8c18682afa799f4df4
This just sets up the toolchain and allows Darwin+Arm64 to be specified
as a HostCross target. These variants will not be exported to Make, or
be installed on a Soong-only build. A future CL will add support for
universal binaries using these variants.
This config is a bit stranger than the regular 64/32 multilib, as it's
two primary 64-bit configs. And on a Darwin/X86 machine, the Arm64
versions are HostCross (doesn't work on the current machines), while a
Darwin/Arm64 machine, either version works (if Rosetta is installed).
Bug: 203607969
Change-Id: Iacaed77d267773672da027cd74917e33fb1c1e94
