XCode15 build targeting 0S 10.13 won't even launch in 10.15 (fine on Monterey upwards)

[reuk]

This sounds similar to an issue reported here:

Plugin won't load on Mojave

We’re building with the latest official Xcode (15.0.1) with MacOS 10.13 as the minimum target. It seems like even with the legacy linker flag (see below) the plugin will fail to scan on MacOS Mojave (10.14) but work fine on Catalina. The standalone app works fine on 10.14 as well, the problem is just with the plugin version and just on Mojave. Both auval, Ableton Live and Reaper fail the scanning with an error message kinda like “Not a plugin”. We’re building using: set(CMAKE_OSX_DEPLOYMENT_…

Perhaps it’s worth trying out the Xcode 15.1 beta to see whether things are fixed there.