DTrace patch for FreeBSD breaks ability to function as a bootstrap compiler under FreeBSD

Ben Gamari ben at well-typed.com
Sat Apr 7 17:00:44 UTC 2018

raichoo via ghc-devs <ghc-devs at haskell.org> writes:

> Hi,
> Last year I've provided a patch that enables DTrace probes under
> FreeBSD, sadly as it turns out this currently breaks the ability of
> GHC 8.4.1 to function as a bootstrap compiler under FreeBSD. I've
> provided a patch that adds a flag to the build system so one can turn
> off DTrace in case one needs to build a bootstrap compiler.
> https://phabricator.haskell.org/D4575
Thanks for the patch. Do you think you could open a ticket for this to
make sure we don't lose track of it?

> This should probably also contain some heads up in the documentation,
> otherwise someone might end up with a compiler that's not suitable for
> bootstrapping. Not sure on how this is being handled.
> I have an idea on how to fix the actual issue but for the time being
> this might be a suitable workaround. Maybe we can still get this into
> 8.4.2? I've already notified the FreeBSD ports maintainers regarding
> this issue.

Yes, I can push this to 8.4.2.

Thanks for the heads-up!
> Sorry for the inconvenience.
> Kind regards,
> raichoo
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