On Sat, Aug 01, 2020 at 07:02:07PM +0800, Jojo R wrote: > +insn-generated-split-num = $(shell nproc)
nproc isn't portable, is not the same on every system, and can lead to a number of processes quadratic in the number of processors being launched (say, if someone does make -jK with K some fraction of the number of processors). (It is a bad choice anyway: nproc shows how many hardware threads are available, not how many it is a good idea to use for optimal performance; and it can be overridden by the user as well, via an environment variable). You need to split to some fixed number of parts, where that fixed number can depend on the target, but not on the host (or build machine) at all. Segher
