[Buildroot] [PATCH] support: properly check for bash as a dependency
Yann E. MORIN
yann.morin.1998 at free.fr
Tue Mar 18 16:55:18 UTC 2014
Thomas, All,
On 2014-03-18 06:01 +0100, Thomas Petazzoni spake thusly:
> On Mon, 17 Mar 2014 11:42:34 +0100, Yann E. MORIN wrote:
>
> > So, calling "$SHELL --version" will still return "^GNU bash" no matter
> > what shell is actually running.
> >
> > Since quite a lot of #!/bin/sh scripts are in fact bash scripts, we
> > really want to ensure that /bin/sh is bash.
>
> I'm definitely against that. My system has /bin/sh pointing to dash,
> and Buildroot works fine. One of the thing that annoyed me in
> OpenEmbedded was its requirements to have /bin/sh be bash.
>
> We clearly don't want that.
I'm just fine with that. :-)
But the current check is broken anyway, as all it checks is that the
login shell of the user is bash.
- if we want to work whith dash as the system shell, then the current
check is unneeded;
- if we want to work with dash as the system shell, we don't care what
login shell the user is using, as we must also work when this is dash;
- SHELL is not mandated by POSIX, so it may be empty on a
POSIX-compliant shell anyway.
So, we should just remove this check altogether.
> I've just checked the Free Electrons autobuilders, and there are also
> using dash as /bin/sh. This means that if configure scripts were using
> bashims unsupported by dash, we would have noticed.
Andrew, what package was the breakage due to?
Regards,
Yann E. MORIN.
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