Thanks for passing this along. I think the liblilv-dev is what is needed (but maybe the other 2 also). A change to "configure.ac" in the last several months concerning "HAVE" and "lilv" resulted in an error message. Before only "libgtk2.0-dev" was required to avoid LV2 related error message. Probably other bld_prepare.sh scripts now need this also but it is beyond what I can check.