- $(GREP) -q '^\\bibdata{' $(basename $<).aux && $(BIBTEX) $(BIBTEXFLAGS) $(basename $<) || true
- $(GREP) -q '\@istfilename' $(basename $<).aux && $(MAKEGLOSSARIES) $(MAKEGLOSSARIESFLAGSFLAGS) $(basename $<)
+ if $(GREP) -q '^\\bibdata{' $(basename $<).aux; then $(BIBTEX) $(BIBTEXFLAGS) $(basename $<); fi
+ if $(GREP) -q '\@istfilename' $(basename $<).aux; then $(MAKEGLOSSARIES) $(MAKEGLOSSARIESFLAGSFLAGS) $(basename $<); fi