4.8.1 Edit Makefile (‘edit’)

To edit the Makefile at the current target location file, use the edit command. The editing program of your choice is invoked with the current line set to the active line in the program.

You can customize to use any editor you want by using the EDITOR environment variable. The only restriction is that your editor, e.g.\ ex), recognizes the following command-line syntax:

ex +number file

The optional numeric value +number specifies the number of the line in the file where to start editing. For example, to configure the GNU Make debugger to use the emacs editor, you could use these commands with a POSIX shell:

EDITOR=/usr/bin/emacs
export EDITOR
remake …

edit

Edit line specification using the editor specified by the EDITOR environment variable.