-ChangeLog:
- cvs2cl --prune --no-wrap --usermap ./cvs2cl/usermap --gmt --stdout | \
- ruby -p -i ./cvs2cl/fmtlog.rb > $@
+ChangeLog: $(filter-out ChangeLog CVS, $(wildcard *))
+ cvs2cl --prune --no-wrap --usermap ./cvs2cl/usermap --gmt --stdout \
+ --ignore '\.tdldb' | \
+ ruby -p ./cvs2cl/fmtlog.rb > $@