Messages in this thread | | | Subject | Re: PATCH [0/3]: Simplify the kernel build by removing perl. | From | Måns Rullgård <> | Date | Thu, 15 Jan 2009 19:45:10 +0000 |
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Jamie Lokier <jamie@shareable.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@mansr.com -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.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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