Re: [PATCH] Pass CONFIG_SHELL down if provided

[Eric Blake]

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According to Paolo Bonzini on 11/12/2008 4:42 AM:
>>> Hmm, you were right: we are still buggy.  M4sh should be the one 
>>> guaranteeing 
>>> that we do SHELL=${CONFIG_SHELL-/bin/sh}, and not autoconf/general.m4.  
>>> Otherwise, AS_INIT_GENERATED is broken when using m4sh but not autoconf, 
>>> and 
>>> when CONFIG_SHELL is not set.
> 
> I fail to understand this.  It is AS_INIT_GENERATED that writes
> 
> SHELL=\${CONFIG_SHELL-$SHELL}
> 
> to config.status.

But who writes it to configure?  Right now, AC_INIT.  But it _should_ be
AS_INIT, otherwise, AS_INIT_GENERATED only works if you call AC_INIT
(which is the wrong dependency).

>> AFAIK it is not easy to portably find out which shell we're under.
> 
> Throwing this in the air: what about the entry value of $_ at the top of
> the script?

Not always present and not necessarily reliable, but it might be helpful.

- --
Don't work too hard, make some time for fun as well!

Eric Blake             address@hidden
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