The following command caused the error:
if [ ! "" ]; then \
          mkdir -p /Perl_Modules/new/etc; \
          if [ ! -f /Perl_Modules/new/etc/ftpd.conf ]; then \
            install -c -m 0644 ftpd.conf /Perl_Modules/new/etc/ftpd.conf; \
          else \
            install -c -m 0644 ftpd.conf /Perl_Modules/new/etc/ftpd.conf.new; \
            echo "Old configuration file /Perl_Modules/new/etc/ftpd.conf not overwritten."; \
            echo "New configuration file installed as /Perl_Modules/new/etc/ftpd.conf.new"; \
          fi; \
        fi
make: Fatal error: Command failed for target `install'