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* Build website incrementally (and faster if you have the CPU cores)Michael Reed2017-07-091-0/+44
This is done by replacing www/generate.sh with a Makefile. Benefits: - Makes builds incremental, meaning that only the minimum number of markdown files will be converted to HTML during a build. The previous scheme always generated a new HTML file for every markdown file, which is a big waste of time if only 1 or 2 markdown files have been changed. - Allows for much faster builds through concurrent jobs (e.g., via "make -j4"). On my 4-core machine, my average build time for the website with generate.sh was just over 26 seconds; with "make -j4", it was 13 seconds. - Avoids portability issues with find(1) in generate.sh, which I was encountering on OpenBSD. A note on portability: unlike GNU Make, OpenBSD's Make does not have the "$(shell [commands])" construct, so we don't use that. Instead we use "!= [commands]", which is supported by both.