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Re: [PATCH] bootstrap: work with pkg-config
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From: |
Eric Blake |
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Subject: |
Re: [PATCH] bootstrap: work with pkg-config |
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Date: |
Tue, 05 Oct 2010 09:48:41 -0600 |
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User-agent: |
Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.2.9) Gecko/20100921 Fedora/3.1.4-1.fc13 Mnenhy/0.8.3 Thunderbird/3.1.4 |
On 10/05/2010 09:41 AM, Pádraig Brady wrote:
Another unrelated thing before I forget.
I didn't notice in the shellology part of the manual
that the default almquist /bin/sh on FreeBSD is noisy when using
a standard idiom for testing the presence of a program.
I'm pretty sure it's in there. Yep:
http://www.gnu.org/software/autoconf/manual/autoconf.html#File-Descriptors
For e.g.
FreeBSD-8$ colorls -d .>/dev/null 2>&1
colorls: not found
One can get around this with:
FreeBSD-8$ { colorls -d . ; }>/dev/null 2>&1
Or more commonly with a subshell (same number of forks under bash 4.1,
at any rate):
(colorls -d .) >/dev/null 2>&1
But yes, mentioning that {} works instead of a subshell might be nice,
particularly if bash ever learns some of dash's optimizations for fewer
forks.
--
Eric Blake address@hidden +1-801-349-2682
Libvirt virtualization library http://libvirt.org