I'm looking at the documentation for the FindBacktrace module, and unlike with, say, FindThreads - I see no mention of a proper library target I can depend on, e.g. Backtrace::Backtrace. Is it really missing or just undocumented?

Also, when I use this module, I get:

//Library providing backtrace(3), empty for default set of libraries
Backtrace_LIBRARY:FILEPATH=

in my CMakeCache.txt (on a Devuan GNU/Linux machine). This is weird. I'm expecting to see -lbacktrace - because that's where I get backtrace_create_state and backtrace_pcinfo (which I need for using Boost stacktrace).

So, what is the "default set of libraries"? libbacktrace is certainly not linked against by default.