Set a breakpoint (break)

break {target | line-number} [ all | run | prereq | end ]*

break

Set a breakpoint at a target or line number; also show breakpoints.

With a target name or a line number, set a break before running commands of that target or line number. Without argument, list all breakpoints.

For a given target, there are 3 places where one may want to stop at; that name can be given as a last option. The stopping points are:

• before target prerequisite checking: prereq
• after target prerequisite checking but before running commands: run
• after target is complete: end

Giving all will stop in all of the above places. The default behavior is run.

Examples:

break               # list all breakpoints
break 10            # Break on line 10 of the Makefile we are
                    # currently stopped at
break tests         # Break on the "tests" target
break tests prereq  # Break on the "tests" target before dependency checking is done

See also

delete.