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From: Peter Korsgaard <peter@korsgaard.com>
To: buildroot@busybox.net
Subject: [Buildroot] [PATCH 1/1] ipsec-tools: needs host-bison
Date: Thu, 20 Sep 2018 08:57:25 +0200	[thread overview]
Message-ID: <87fty4psfe.fsf@dell.be.48ers.dk> (raw)
In-Reply-To: <20180920084522.1dea57e8@windsurf> (Thomas Petazzoni's message of "Thu, 20 Sep 2018 08:45:22 +0200")

>>>>> "Thomas" == Thomas Petazzoni <thomas.petazzoni@bootlin.com> writes:

Hi,

 >> Hmm, shouldn't this use BR2_BISON_HOST_DEPENDENCY /
 >> BR2_FLEX_HOST_DEPENDENCY instead?

 > No, that's not what we have agreed so far. Our idea was that
 > BR2_BISON_HOST_DEPENDENCY and BR2_FLEX_HOST_DEPENDENCY would be used
 > only for the kconfig stuff in the kernel/u-boot and al, but that we
 > would keep using our own host-flex/host-bison for the rest, and
 > especially for target packages.

 > There are two reasons to that:

 >  (1) We can be pretty confident that the flex/bison stuff in kconfig
 >      will have been tested/exercised against a wide variety of
 >      flex/bison versions, so using whatever flex/bison version
 >      available on the host system is good enough. However, for the rest
 >      of the packages that use flex/bison, we can't be so sure, so
 >      having our own flex/bison version allows us to be sure that things
 >      "will work".

 >  (2) For target packages, using the system-provided flex/bison version
 >      means that the generated code can be subtly different between
 >      flex/bison versions, which makes the build non-reproducible. Hence,
 >      it is important to have our own fixed version of flex/bison. For
 >      host packages, that is probably less of a concern, but point (1)
 >      remains valid.

 > Do we still agree on this position, or do you have
 > counter-arguments ? :-)

No, you convinced me ;) Thanks!


-- 
Bye, Peter Korsgaard

  reply	other threads:[~2018-09-20  6:57 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-09-15  9:59 [Buildroot] [PATCH 1/1] ipsec-tools: needs host-bison Fabrice Fontaine
2018-09-16 13:44 ` Thomas Petazzoni
2018-09-19 21:00 ` Peter Korsgaard
2018-09-20  6:45   ` Thomas Petazzoni
2018-09-20  6:57     ` Peter Korsgaard [this message]
2018-09-20 14:56     ` Yann E. MORIN
2018-10-01 21:44 ` Peter Korsgaard

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