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Date: Wed, 16 May 2012 13:16:01 +0300
From: Vitaly Magerya <vmagerya@gmail.com>
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To: Svyatoslav Lempert <svyatoslav.lempert@gmail.com>
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Cc: Michael Scheidell <scheidell@freebsd.org>, freebsd-ports@freebsd.org
Subject: Re: how to find the number of processor cores
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Svyatoslav Lempert wrote:
>> Try to describe why/ and why you want to do this.
> 
> http://www.freebsd.org/cgi/query-pr.cgi?pr=167953
> 
>> Try:
>>
>> CPUS!= ${SYSCTL} -n kern.smp.cpus

What if the package was built on one machine, but is installed on
another one? The number of CPUs during the build is meaningless; you
need to test for those at runtime (or find another workaround).