1# $NetBSD: cmd-interrupt.mk,v 1.4 2023/03/18 22:20:12 sjg Exp $ 2# 3# Tests for interrupting a command. 4# 5# If a command is interrupted (usually by the user, here by itself), the 6# target is removed. This is to avoid having an unfinished target that 7# would be newer than all of its sources and would therefore not be 8# tried again in the next run. 9# 10# This happens for ordinary targets as well as for .PHONY targets, even 11# though the .PHONY targets usually do not correspond to a file. 12# 13# To protect the target from being removed, the target has to be marked with 14# the special source .PRECIOUS. These targets need to ensure for themselves 15# that interrupting them does not leave an inconsistent state behind. 16# 17# See also: 18# CompatDeleteTarget 19 20all: clean-before interrupt-ordinary interrupt-phony interrupt-precious clean-after 21 22clean-before clean-after: .PHONY 23 @rm -f cmd-interrupt-ordinary cmd-interrupt-phony cmd-interrupt-precious 24 25interrupt-ordinary: 26 @${.MAKE} ${MAKEFLAGS} -f ${MAKEFILE} cmd-interrupt-ordinary || true 27 # The ././ is necessary to work around the file cache. 28 @echo ${.TARGET}: ${exists(././cmd-interrupt-ordinary) :? error : ok } 29 30interrupt-phony: .PHONY 31 @${.MAKE} ${MAKEFLAGS} -f ${MAKEFILE} cmd-interrupt-phony || true 32 # The ././ is necessary to work around the file cache. 33 @echo ${.TARGET}: ${exists(././cmd-interrupt-phony) :? ok : error } 34 35interrupt-precious: .PRECIOUS 36 @${.MAKE} ${MAKEFLAGS} -f ${MAKEFILE} cmd-interrupt-precious || true 37 # The ././ is necessary to work around the file cache. 38 @echo ${.TARGET}: ${exists(././cmd-interrupt-precious) :? ok : error } 39 40cmd-interrupt-ordinary: 41 > ${.TARGET} 42 @kill -INT ${.MAKE.PID} 43 44cmd-interrupt-phony: .PHONY 45 > ${.TARGET} 46 @kill -INT ${.MAKE.PID} 47 48cmd-interrupt-precious: .PRECIOUS 49 > ${.TARGET} 50 @kill -INT ${.MAKE.PID} 51