17 lines
384 B
Makefile
17 lines
384 B
Makefile
# $NetBSD: varname-dot-make-pid.mk,v 1.3 2022/01/23 21:48:59 rillig Exp $
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#
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# Tests for the special .MAKE.PID variable, which contains the process ID of
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# the make process itself.
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# The process ID must be a positive integer.
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.if ${.MAKE.PID:C,[0-9],,g} != ""
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. error
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.elif !(${.MAKE.PID} > 0)
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. error
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.endif
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# Ensure that the process exists.
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_!= kill -0 ${.MAKE.PID}
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all: .PHONY
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