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From: Ed Maste <emaste@freebsd.org>
Date: Wed, 18 Nov 2015 16:56:21 -0500
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Subject: Re: libXO-ification - Why - and is it a symptom of deeper issues?
To: Luigi Rizzo <rizzo@iet.unipi.it>
Cc: Lars Engels <lars.engels@0x20.net>, Allan Jude <allanjude@freebsd.org>, 
 Garrett Cooper <yaneurabeya@gmail.com>,
 freebsd-current <freebsd-current@freebsd.org>
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On 18 November 2015 at 15:46, Luigi Rizzo <rizzo@iet.unipi.it> wrote:
> i was going to suggest doing ldd on the binaries or a grep on the
> Makefile but the latter returns a surprisingly low number
> of matches.

That's because it's usually added via LIBADD=xo.

My grep turns up these: bin/df, bin/ls, bin/ps, sbin/savecore,
usr.bin/iscsictl, usr.bin/netstat, usr.bin/procstat, usr.bin/w,
usr.bin/wc, usr.bin/xo