Re: [PATCH] autogen.sh: Restore --no-git (avoid git submodule update)

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On Tue, Jun 02, 2020 at 04:47:45PM +0100, Ian Jackson wrote:
> Prior to 2621d48f005a "gnulib: delete all gnulib integration",
> one could pass ./autogen.sh --no-git to prevent the libvirt build
> system from running git submodule update.
> 
> This feature is needed by systems like the Xen Project CI which want
> to explicitly control the revisions of every tree.  These will
> typically arrange to initialise the submodules check out the right
> version of everything, and then expect the build system not to mess
> with it any more.
> 
> Despite to the old documentation comments referring only to gnulib,
> the --no-git feature is required not only because of gnulib but also
> because of the other submodule, src/keycodemapdb.
> 
> (And in any case, even if it were no longer required because all the
> submodules were removed, it ought ideally to have been retained as a
> no-op for compaibility reasons.)
> 
> So restore the --no-git feature.
> 
> Because of the way the argument parsing of autogen.sh works, it is
> easiest to recognise this option only if it comes first.  This works
> for the Xen Project CI, which has always passed this option first.
> 
> If something else is using this option (and hasn't introduced a
> different workaround in the meantime), not in the first position,
> then perhaps a more sophisticated approach will be needed.  But I
> think this will do for now.
> 
> Signed-off-by: Ian Jackson <ian.jackson@xxxxxxxxxxxxx>
> ---
>  autogen.sh | 11 ++++++++++-
>  1 file changed, 10 insertions(+), 1 deletion(-)
> 
> diff --git a/autogen.sh b/autogen.sh
> index 4e1bbceb0a..1c98273452 100755
> --- a/autogen.sh
> +++ b/autogen.sh
> @@ -1,5 +1,10 @@
>  #!/bin/sh
>  # Run this to generate all the initial makefiles, etc.
> +#
> +# THe following options must come first.  All other or subsequent
> +# arguments are passed to configure:
> +#   --no-git   skip `git submodule update --init`
> +
>  test -n "$srcdir" || srcdir=$(dirname "$0")
>  test -n "$srcdir" || srcdir=.
>  
> @@ -13,7 +18,11 @@ cd "$srcdir"
>      exit 1
>  }
>  
> -git submodule update --init || exit 1
> +if [ "x$1" = x--no-git ]; then
> +	shift
> +else
> +	git submodule update --init || exit 1

I changed the TAB into spaces.

> +fi
>  
>  autoreconf --verbose --force --install || exit 1

Reviewed-by: Pavel Hrdina <phrdina@xxxxxxxxxx>

and pushed.

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