Reading the Makefile: ``` install: install -d $(DESTDIR)$(BINDIR) install -m 755 doclifter $(DESTDIR)$(BINDIR)/doclifter install -m 755 manlifter $(DESTDIR)$(BINDIR)/manlifter install doclifter.1 $(DESTDIR)$(MANDIR)/man1/doclifter.1 install manlifter.1 $(DESTDIR)$(MANDIR)/man1/manlifter.1 uninstall: rm -f $(DESTDIR)$(BINDIR)/doclifter rm -f $(DESTDIR)$(MANDIR)/man1/doclifter.1 rm -f $(DESTDIR)$(MANDIR)/man1/manlifter.1 ``` there are two problems: 1. missing man directory creation in the install rule: ``` install -d $(DESTDIR)$(MANDIR)/man1 ``` 2. missing manlifter removal in the uninstall ``` rm -f $(DESTDIR)$(BINDIR)/manlifter ```