libopencm3/libopencm3 — pull request #56 by karlp (2012-10-30 10:06:04+00:00)
Title: Allow make to build libs/examples in parallel.

You cannot issue make inside a for loop if you want to let it run in
parallel. Performance increases seen:

10:03 < zyp> I tested make all -j8 without your change, it takes 8.7s
10:03 < zyp> so on my cpu, your change gives >2x speedup

My own cpu gives more modest speed increases, of only about 20%.