linux-kernel - Re: PATCH [0/3]: Simplify the kernel build by removing perl.

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Message-ID: <20090115185224.GB5440@shareable.org>
Date:	Thu, 15 Jan 2009 18:52:24 +0000
From:	Jamie Lokier <jamie@...reable.org>
To:	Pádraig Brady <P@...igBrady.com>
Cc:	Måns Rullgård <mans@...sr.com>,
	linux-kernel@...r.kernel.org, linux-embedded@...r.kernel.org
Subject: Re: PATCH [0/3]: Simplify the kernel build by removing perl.

Pádraig Brady wrote:
> > The $(( ... )) construct is standard POSIX shell syntax, see
> > http://www.opengroup.org/onlinepubs/000095399/utilities/xcu_chap02.html#tag_02_06_04
> > 
> > Bash supports $[ ... ] as an alternate syntax for the same thing.
> > Perhaps you were thinking of that.
> 
> I think the misconception that $(( ... )) is a bashism is caused by
> the wrong highlighting defaults chosen by vim.

I think the misconception is because traditional unix bourne shells
don't implement that construct.  I just tried it on a few machines,
and it failed on 4 of them.  Admittedly, the only up to date one is
running Solaris 10; the others are older unixes that you're unlikely
to build Linux on.

-- Jamie
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