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Re: gnulib-tool dependency list broken?


From: Eric Blake
Subject: Re: gnulib-tool dependency list broken?
Date: Tue, 11 Mar 2014 16:06:18 -0600
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:24.0) Gecko/20100101 Thunderbird/24.3.0

On 03/11/2014 03:58 PM, Ludovic Courtès wrote:
> Hello,
> 
> Running gnulib-tool in Guile today shows a weird module list:
> 

> v0.1-92-g546ff82
> 
> $ ~/src/gnulib/gnulib-tool --update
> Module list with included dependencies (indented):
>     absolute-header
>   accept
>   alignof
>     alloca

> 
> What is ‘absolute-header’ doing here?  Since when does ‘announce-gen’
> depend on ‘arpa_inet’, ‘ceil’ on ‘chdir’, etc.?
> 
> Am I misinterpreting the list, or is there something wrong here?

You're merely misinterpreting the list.  The list is foremost
alphabetical, secondarily indented to show which modules were explicitly
requested vs. those that were pulled in by one or more dependency
chains.  It is NOT a topological map of dependencies (which in some
cases is not possible, since we have non-DAG dependencies).

> 
> It doesn’t seem to affect the actual list of imported files, but could
> there be a problem there too?

No, it's been that way for a long time; you are just now noticing.

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

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