[Lldb-commits] Optional Dependencies in LLDB

[Jonas Devlieghere via lldb-commits]

(This was meant for lldb-dev)

On Mon, Jan 6, 2020 at 11:15 AM Jonas Devlieghere <jonas at devlieghere.com> wrote:
>
> Hey everyone,
>
> I just wanted to let you know that most of the work is complete for
> auto-detecting optional dependencies in LLDB. Unless explicitly
> specified, optional dependencies like editline will be enabled when
> available and disabled otherwise. This is different from  the old
> behavior, where optional dependencies were that were enabled by
> default would cause an error at configuration time. The motivation is
> to make it easier to build LLDB by making things "just work" out of
> the box.
>
> All optional dependencies are now controlled by an LLDB_ENABLE_* CMake
> flag. The default value for these variables is "Auto", which causes
> the dependency to be enabled based on whether it was found. It's still
> possible to obtain the old behavior by setting the corresponding CMake
> variable to "On" or "Off" respectively.
>
> If you have a configuration where you were depending on the old
> behavior where the dependency being enabled or disabled by default,
> you might want to consider passing LLDB_ENABLE_*=On/Off to CMake to
> ensure the dependency is required or ignored respectively.
>
> TL;DR Optional dependencies in LLDB are controlled by LLDB_ENABLE_*
> CMake flags and are auto-detected by default. You can return to the
> old behavior by setting the variables to "On" or "Off" respectively.