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Message-ID: <yw1xtz80z73t.fsf@thrashbarg.mansr.com> Date: Thu, 15 Jan 2009 19:45:10 +0000 From: Måns Rullgård <mans@...sr.com> To: Jamie Lokier <jamie@...reable.org> Cc: Pádraig Brady <P@...igBrady.com>, 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. Jamie Lokier <jamie@...reable.org> writes: > 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. On Solaris, /usr/xpg4/bin/sh is usually a POSIX-compliant shell. I don't know how long it has been there. -- Måns Rullgård mans@...sr.com -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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