| 1 |
On 14/12/16 10:11, Doug Freed wrote: |
| 2 |
> On Wed, Dec 14, 2016 at 11:04 AM, Michał Górny <mgorny@g.o> wrote: |
| 3 |
>> On Wed, 14 Dec 2016 15:27:25 +0300 |
| 4 |
>> Andrew Savchenko <bircoph@g.o> wrote: |
| 5 |
>> |
| 6 |
>>> On Tue, 13 Dec 2016 10:36:15 +0100 Michał Górny wrote: |
| 7 |
>>>> + nproc=$(python -c 'import multiprocessing; print(multiprocessing.cpu_count());' 2>/dev/null) |
| 8 |
>>> This is not portable. E.g. paludis users can have python-less |
| 9 |
>>> system. Adding dev-lang/python to DEPEND will be also a bad idea, |
| 10 |
>>> since this is quite heavy dependency. |
| 11 |
>> You can bikeshed potential circumstances where it wouldn't work for |
| 12 |
>> the next year. Which doesn't change that it would work quite reliably |
| 13 |
>> for the most of Gentoo users. |
| 14 |
>> |
| 15 |
>>> Since on Linux boxes nproc is from coreutils, which is in @system, |
| 16 |
>>> so looks like only *bsd setups are the problem. On FreeBSD |
| 17 |
>> ...and all other operating systems (see: Prefix). |
| 18 |
>> |
| 19 |
>>> sysctl -a | egrep -i 'hw.ncpu' |
| 20 |
>> I somehow doubt that would give me the expected number only, and I lack |
| 21 |
>> a BSD install handy to test it. |
| 22 |
> $(sysctl -n hw.ncpu) |
| 23 |
> |
| 24 |
I don't know that the sysctl command works universally: |
| 25 |
|
| 26 |
# sysctl -n hw.ncpu |
| 27 |
sysctl: cannot stat /proc/sys/hw/ncpu: No such file or directory |
Archives