As ROOTSYS is required for the ROME build, I would suggest to
include the code below in the builder for the application Makefile.
This will make Rome less dependent on the ROOT path.

Replace in ROMEBuilder.cpp:

buffer.AppendFormatted("rootcint -f %sDict.cpp -c -p ",shortCut.Data());

by

buffer.AppendFormatted("LD_LIBRARY_PATH=$(ROOTSYS)/lib $(ROOTSYS)/bin/rootcint
-f %sDict.cpp -c -p ",shortCut.Data());