dash

[Stefan Potyra]

Hi,

Am Friday 15 September 2006 21:06 schrieb Rocco Stanzione:
> On Thursday 14 September 2006 14:45, Scott James Remnant wrote:
> > On Thu, 2006-09-14 at 14:06 -0500, Rocco Stanzione wrote:
> > > I kept quiet, though, figuring too many wheels had already started
> > > turning in that direction, until today when I tried to build iptables.
> > > When I ran "make", the first line of output was:
> > >
> > > [: 1: /usr/src/linux/include/asm: unexpected operator
> > >
> > > caused by the line:
> > >
> > > ifeq ($(shell [ -a $(KERNEL_DIR)/include/asm ] && echo YES), YES)
> >
> > Err, this isn't valid POSIX shell...
> >
> > > http://www.opengroup.org/onlinepubs/000095399/utilities/test.html
> >
> > As cited by the URL you gave.
> >
> >
> > "test -a" is a very definite bashism for "if file exists".  The correct
> > POSIX for that is -e.
>
> I've just noticed a new bug filed:
> https://launchpad.net/distros/ubuntu/+source/flashplugin-nonfree/+bug/60612
>
> Another #!/bin/sh script that fails with dash.  By itself, it's not a big
> deal.  We can fix the script in our repositories.  Let me be more
> conservative in making this claim this time, but from what I can tell from
> http://www.opengroup.org/onlinepubs/000095399/idx/shell.html
> and
> http://www.opengroup.org/onlinepubs/000095399/functions/wait.html
> to which the first link refers, returning -1 is good POSIX behavior which
> dash cannot handle.

Wrong quote for that bug:
http://www.opengroup.org/onlinepubs/000095399/utilities/return.html

"[...] '?' shall be set to n, an unsigned decimal integer, [...]"

Cheers,
    Stefan.
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