On 14/12/16 10:11, Doug Freed wrote: > On Wed, Dec 14, 2016 at 11:04 AM, Michał Górny <mgo...@gentoo.org> wrote: >> On Wed, 14 Dec 2016 15:27:25 +0300 >> Andrew Savchenko <birc...@gentoo.org> wrote: >> >>> On Tue, 13 Dec 2016 10:36:15 +0100 Michał Górny wrote: >>>> + nproc=$(python -c 'import multiprocessing; >>>> print(multiprocessing.cpu_count());' 2>/dev/null) >>> This is not portable. E.g. paludis users can have python-less >>> system. Adding dev-lang/python to DEPEND will be also a bad idea, >>> since this is quite heavy dependency. >> You can bikeshed potential circumstances where it wouldn't work for >> the next year. Which doesn't change that it would work quite reliably >> for the most of Gentoo users. >> >>> Since on Linux boxes nproc is from coreutils, which is in @system, >>> so looks like only *bsd setups are the problem. On FreeBSD >> ...and all other operating systems (see: Prefix). >> >>> sysctl -a | egrep -i 'hw.ncpu' >> I somehow doubt that would give me the expected number only, and I lack >> a BSD install handy to test it. > $(sysctl -n hw.ncpu) > I don't know that the sysctl command works universally:
# sysctl -n hw.ncpu sysctl: cannot stat /proc/sys/hw/ncpu: No such file or directory
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