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d5b3b76a71
Given a start expression, bb.utils.get_referenced_vars returns the
referenced variable names in a quasi-BFS order (variables within the
same level are ordered aribitrarily).
For example, given an empty data store:
bb.utils.get_referenced_vars("${A} ${B} ${d.getVar('C')}", d)
returns either ["A", "B", "C"], ["A", "C", "B"], or another
permutation.
If we then set A = "${F} ${G}", then the same call will return a
permutation of [A, B, C] concatenated with a permutation of [F, G].
This method is like a version of d.expandWithRefs().references that
gives some insight into the depth of variable references.
(Bitbake rev: 076eb5453ca35b8b75b8270efb989d5208095b27)
Signed-off-by: Chris Laplante <chris.laplante@agilent.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>