59 lines
2.0 KiB
Makefile
59 lines
2.0 KiB
Makefile
# $NetBSD: cmdline.mk,v 1.4 2022/06/10 18:58:07 rillig Exp $
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#
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# Tests for command line parsing and related special variables.
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TMPBASE?= ${TMPDIR:U/tmp/uid${.MAKE.UID}}
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SUB1= a7b41170-53f8-4cc2-bc5c-e4c3dd93ec45 # just a random UUID
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SUB2= 6a8899d2-d227-4b55-9b6b-f3c8eeb83fd5 # just a random UUID
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MAKE_CMD= env TMPBASE=${TMPBASE}/${SUB1} ${.MAKE} -f ${MAKEFILE} -r
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DIR2= ${TMPBASE}/${SUB2}
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DIR12= ${TMPBASE}/${SUB1}/${SUB2}
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all: prepare-dirs
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all: makeobjdir-direct makeobjdir-indirect
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all: space-and-comment
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prepare-dirs:
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@rm -rf ${DIR2} ${DIR12}
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@mkdir -p ${DIR2} ${DIR12}
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# The .OBJDIR can be set via the MAKEOBJDIR command line variable.
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# It must be a command line variable; an environment variable would not work.
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makeobjdir-direct:
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@echo $@:
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@${MAKE_CMD} MAKEOBJDIR=${DIR2} show-objdir
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# The .OBJDIR can be set via the MAKEOBJDIR command line variable,
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# and that variable could even contain the usual modifiers.
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# Since the .OBJDIR=MAKEOBJDIR assignment happens very early,
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# the SUB2 variable in the modifier is not defined yet and is therefore empty.
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# The SUB1 in the resulting path comes from the environment variable TMPBASE,
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# see MAKE_CMD.
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makeobjdir-indirect:
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@echo $@:
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@${MAKE_CMD} MAKEOBJDIR='$${TMPBASE}/$${SUB2}' show-objdir
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show-objdir:
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@echo $@: ${.OBJDIR:Q}
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# Variable assignments in the command line are handled differently from
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# variable assignments in makefiles. In the command line, trailing whitespace
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# is preserved, and the '#' does not start a comment. This is because the
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# low-level parsing from ParseRawLine does not take place.
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#
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# Preserving '#' and trailing whitespace has the benefit that when passing
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# such values to sub-makes via MAKEFLAGS, no special encoding is needed.
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# Leading whitespace in the variable value is discarded though, which makes
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# the behavior inconsistent.
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space-and-comment: .PHONY
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@echo $@:
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@env -i \
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${MAKE} -r -f /dev/null ' VAR= value # no comment ' -v VAR \
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| sed 's,$$,$$,'
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@env -i MAKEFLAGS="' VAR= value # no comment '" \
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${MAKE} -r -f /dev/null -v VAR \
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| sed 's,$$,$$,'
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