51 lines
1.8 KiB
Makefile
Executable File
51 lines
1.8 KiB
Makefile
Executable File
# $NetBSD: cmd-interrupt.mk,v 1.4 2023/03/18 22:20:12 sjg Exp $
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#
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# Tests for interrupting a command.
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#
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# If a command is interrupted (usually by the user, here by itself), the
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# target is removed. This is to avoid having an unfinished target that
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# would be newer than all of its sources and would therefore not be
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# tried again in the next run.
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#
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# This happens for ordinary targets as well as for .PHONY targets, even
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# though the .PHONY targets usually do not correspond to a file.
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#
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# To protect the target from being removed, the target has to be marked with
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# the special source .PRECIOUS. These targets need to ensure for themselves
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# that interrupting them does not leave an inconsistent state behind.
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#
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# See also:
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# CompatDeleteTarget
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all: clean-before interrupt-ordinary interrupt-phony interrupt-precious clean-after
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clean-before clean-after: .PHONY
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@rm -f cmd-interrupt-ordinary cmd-interrupt-phony cmd-interrupt-precious
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interrupt-ordinary:
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@${.MAKE} ${MAKEFLAGS} -f ${MAKEFILE} cmd-interrupt-ordinary || true
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# The ././ is necessary to work around the file cache.
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@echo ${.TARGET}: ${exists(././cmd-interrupt-ordinary) :? error : ok }
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interrupt-phony: .PHONY
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@${.MAKE} ${MAKEFLAGS} -f ${MAKEFILE} cmd-interrupt-phony || true
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# The ././ is necessary to work around the file cache.
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@echo ${.TARGET}: ${exists(././cmd-interrupt-phony) :? ok : error }
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interrupt-precious: .PRECIOUS
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@${.MAKE} ${MAKEFLAGS} -f ${MAKEFILE} cmd-interrupt-precious || true
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# The ././ is necessary to work around the file cache.
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@echo ${.TARGET}: ${exists(././cmd-interrupt-precious) :? ok : error }
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cmd-interrupt-ordinary:
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> ${.TARGET}
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@kill -INT ${.MAKE.PID}
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cmd-interrupt-phony: .PHONY
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> ${.TARGET}
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@kill -INT ${.MAKE.PID}
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cmd-interrupt-precious: .PRECIOUS
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> ${.TARGET}
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@kill -INT ${.MAKE.PID}
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