42 lines
1.3 KiB
Makefile
42 lines
1.3 KiB
Makefile
# $NetBSD: varname-dot-make-mode.mk,v 1.3 2022/05/07 17:49:47 rillig Exp $
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#
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# Tests for the special .MAKE.MODE variable.
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# TODO: test .MAKE.MODE "meta", or see meta mode tests.
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# TODO: test .MAKE.MODE "compat"
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# See Makefile, POSTPROC for the postprocessing that takes place.
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# See the .rawout file for the raw output before stripping the digits.
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all: .PHONY make-mode-randomize-targets
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# By adding the word "randomize-targets" to the variable .MAKE.MODE, the
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# targets are not made in declaration order, but rather in random order. This
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# mode helps to find undeclared dependencies between files.
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#
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# History
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# Added on 2022-05-07.
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#
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# See also
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# https://gnats.netbsd.org/45226
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make-mode-randomize-targets: .PHONY
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@echo "randomize compat mode:"
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@${MAKE} -r -f ${MAKEFILE} randomize-targets
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@echo "randomize jobs mode (-j1):"
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@${MAKE} -r -f ${MAKEFILE} -j1 randomize-targets
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@echo "randomize jobs mode (-j5):"
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@${MAKE} -r -f ${MAKEFILE} -j5 randomize-targets | grep '^:'
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.if make(randomize-targets)
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randomize-targets: .WAIT a1 a2 a3 .WAIT b1 b2 b3 .WAIT c1 c2 c3 .WAIT
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a1 a2 a3 b1 b2 b3 c1 c2 c3:
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: Making ${.TARGET}
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# .MAKE.MODE is evaluated after parsing all files, so it suffices to switch
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# the mode after defining the targets.
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.MAKE.MODE+= randomize-targets
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.endif
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