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bhyve: Make gdb support optional

Authored by markj on Jul 12 2023, 1:51 PM.
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Add a BHYVE_GDB_SUPPORT make variable that can be set by per-arch
makefiles. When set, BHYVE_GDB is defined and can be used as a
preprocessor predicate. Use it to guard gdb stub calls in MI code.

The arm64 bhyve port currently does not have a functional gdb stub, but
that's not critical to landing the port, so this mechanism slightly
reduces the friction of adding support for a new platform.

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rG FreeBSD src repository
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Event Timeline

markj requested review of this revision.Jul 12 2023, 1:51 PM
jhb added inline comments.

Do you want to make '-G' here conditional on BHYVE_GDB? (Not sure how messy the usage() function ends up at the end of all this)

This revision is now accepted and ready to land.Jul 12 2023, 6:33 PM
This revision was automatically updated to reflect the committed changes.