List all targets of a Makefile from the terminal

list-makefile-targets

#!/bin/sh
#
# Running this script in a directory with a Makefile will print the
# targets in that Makefile, e.g.
#
#     $ list-makefile-targets
#     all
#     clean
#     docs
#     install
#     install-docs
#
# The script uses Perl.  Any remotely modern version should suffice.

make -pn | perl -F: -ane 'print "$F[0]\n" if /^\w+\s*:/' | sort | uniq

Here there's a good option