32 lines
902 B
Text
32 lines
902 B
Text
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rm -f a a.extra b b.did
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d0=""
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redo a
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redo-ifchange b
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d1=$(cat b.did)
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[ "$d0" != "$d1" ] || exit 11
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# b only rebuilds if a changes
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../flush-cache
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redo-ifchange b
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d2=$(cat b.did)
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[ "$d1" = "$d2" ] || exit 12
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# forcibly changing a should rebuild b.
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# a is already symlink to a.extra, but redo shouldn't care about the
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# target of symlinks, so it shouldn't freak out that a.extra has changed.
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# Anyway, b should still rebuild because a was rebuilt.
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../flush-cache
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redo a
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redo-ifchange b
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d3=$(cat b.did)
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[ "$d2" != "$d3" ] || exit 13
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# Explicitly check that changing a's symlink target (a.extra) does *not*
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# trigger a rebuild of b, because b depends on the stamp of the symlink,
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# not what the symlink points to. In redo, you declare dependencies on
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# specific filenames, not the things they happen to refer to.
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../flush-cache
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touch a.extra
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redo-ifchange b
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d4=$(cat b.did)
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[ "$d3" = "$d4" ] || exit 14
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