Previously libimobiledevice had to be installed from souce by hand using a pile of steps.
These steps have been added to the Makefile and just running `make` as part of the normal install process will install it.
You can also run the specific step to install libimobiledevice using `make libimd`

That `make libimd` is already run by `init.sh`; both the one in the clone of stf_ios_support, and the one included into dist.tgz