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Surprise Me!
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By bloid
via cmcrossroads.com
Published: Dec 11 2006 / 11:54

Makefile Optimization: $(eval) and macro caching
Now that GNU Make 3.81 is out and $(eval) works reliably it's time to look at how $(eval) can be used to create useful side effects inside GNU Make macros. One of these side effects is a one-line caching function that speeds up long GNU Make macros without having to resort to := and a potentially complex revision to a Makefile.
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