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Date: Sun, 17 Aug 2014 22:07:17 +0200
From: olli hauer <ohauer@gmx.de>
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To: Andrej Zverev <andrej.zverev@gmail.com>
Subject: Re: Mk/Uses/perl.mk possible regression
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Cc: Olli Hauer <ohauer@freebsd.org>, perl <perl@freebsd.org>
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On 2014-08-17 21:00, Andrej Zverev wrote:
> FOO = #nothing
> FOO+= something
> = something
> 
> so if USE_PERL5 = #nothing it will be "run build" by default, since
> you overriding in before .mk file you need explicitly declare
> second part. Like USE_PERL5= run build fixpacklist or USE_PERL5= run
> build and USE_PERL5+= fixpacklist.
> 
> You can always check via make -VUSE_PERL5 what you'll get.

Indeed this will do the trick, I haven't expect this is required.

-- 
olli