What is the optimal value of the -j flag for make ? I know that all my source is free of errors.
Is it the number of cores? Or the number of logical processors?
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IIRC `make` will use whatever is available without using the `-j` option. I've always used it to limit the resources being used so that my machine is still usable for other tasks while something big builds. – ivanivan Jun 12 '17 at 04:58
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1@ivanivan it won’t build in parallel by default, you need to use `-j` if you want parallel builds. – Stephen Kitt Jun 12 '17 at 05:38