Re: [iptables][PATCH] configure: Add option to enable/disable libnfnetlink

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On Wed, Apr 24, 2024 at 08:35:12PM +0200, Phil Sutter wrote:
> On Wed, Apr 24, 2024 at 05:20:15PM +0200, Pablo Neira Ayuso wrote:
> > On Wed, Apr 24, 2024 at 04:58:40PM +0200, Phil Sutter wrote:
> > > On Wed, Apr 24, 2024 at 04:11:59PM +0200, Alexander Kanavin wrote:
> > > > On 4/24/24 14:53, Phil Sutter wrote:
> > > > > Hi,
> > > > >
> > > > > On Wed, Apr 24, 2024 at 02:28:04PM +0200, Alexander Kanavin wrote:
> > > > >> From: "Maxin B. John" <maxin.john@xxxxxxxxx>
> > > > >>
> > > > >> This changes the configure behaviour from autodetecting
> > > > >> for libnfnetlink to having an option to disable it explicitly.
> > > > >>
> > > > >> Signed-off-by: Khem Raj <raj.khem@xxxxxxxxx>
> > > > >> Signed-off-by: Maxin B. John <maxin.john@xxxxxxxxx>
> > > > >> Signed-off-by: Alexander Kanavin <alex@xxxxxxxxxxxxx>
> > > > > The patch looks fine as-is, I wonder though what's the goal: Does the
> > > > > build system have an incompatible libnfnetlink which breaks the build?
> > > > > It is used by nfnl_osf only, right? So maybe introduce
> > > > > | AC_ARG_ENABLE([nfnl_osf], ...)
> > > > > instead?
> > > > 
> > > > The patch is very old, and I didn't write it (I'm only cleaning up the 
> > > > custom patches that yocto project is currently carrying). It was 
> > > > introduced for the purposes of ensuring build determinism and 
> > > > reproducibility: so that libnfnetlink support doesn't get quietly 
> > > > enabled or disabled depending on what is available in the build system, 
> > > > but can be reliably turned off or on.
> > > 
> > > Thanks for the explanation. I don't quite get how a build is
> > > deterministic if libnfnetlink presence is not, but OK.
> > 
> > IIRC, there are also dependencies on utils with libnfnetlink that
> > would need to be disabled too.
> 
> Within iptables, we only have nfnl_osf (in utils/) which depends on it,
> but missing HAVE_LIBNFNETLINK effectively disables it from being built.
> So unless you have something else in mind, that's fine with and without
> this patch.

That's fine then, thanks.




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