Way to visualize target hierarchy, instead of files

[ZelphirKaltstahl]

Is there any way to use makefile2graph to show the tree of targets, instead of the tree of files?

The use cases I have are often not files, but merely .PHONY targets, which are any kind of jobs, not necessarily compilations, which lead to files being created. They might be something like running tests and outputting test result, or running a linter, which outputs comments about files.