Re: [Qemu-devel] [PATCH 1/5] configure to set shell type

[Eric Blake <eblake@redhat.com>]

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On 03/16/2012 06:35 AM, Peter Maydell wrote:
>> The issue here is really just getting a fully POSIX-conformant shell.
>> And the way I expect this to work is by executing configure and make in
>> such a shell and by not having hardcoded /bin/sh creep in through some
>> shebang line.
> 
> The way I expect this to work is that /bin/sh should be a posix shell...

Then your expectations are wrong.  POSIX itself says that /bin/sh need
not be the POSIX shell, and merely requires that you can query for a
conforming PATH to use, and that the 'sh' found on that PATH search is
the POSIX shell (that is, 'command -p sh' will be conforming, but won't
necessarily be /bin/sh).  This weasel-wording is intentionally written
specifically for Solaris, since they refuse to make /bin/sh
POSIX-conforming ("it might break 30-year-old legacy scripts - gasp!"),
and instead set their conforming PATH to have /usr/xpg4/bin (or these
days, /usr/xpg6/bin:/usr/xpg4/bin) prior to /bin.

-- 
Eric Blake   eblake@redhat.com    +1-919-301-3266
Libvirt virtualization library http://libvirt.org


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