[Scons-dev] Directory node up_to_date changes

[William Blevins]

Manish,

Have you thought about the performance penalty for the directory node
up_to_date change? I assume this is a reason the code operates as it
currently does...

This will require, O(N * M) checks per directory node where N = max
directory depth and M = the number of files within the directory chain.

V/R,
William
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