From mboxrd@z Thu Jan 1 00:00:00 1970 From: Thomas Petazzoni Date: Sun, 21 Jul 2019 15:49:28 +0200 Subject: [Buildroot] [PATCH 1/1] package/libpng: allow selection of older libpng versions In-Reply-To: <20190707165224.31438-1-paul@crapouillou.net> References: <20190707165224.31438-1-paul@crapouillou.net> Message-ID: <20190721154928.11db1c4f@windsurf> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: buildroot@busybox.net Hello Paul, +Yann, Arnout, Peter in Cc. On Sun, 7 Jul 2019 12:52:24 -0400 Paul Cercueil wrote: > By allowing building an older version of libpng, we can create Buildroot > systems that are still binary-compatible with applications compiled with > older Buildroot toolchains. > > Signed-off-by: Paul Cercueil While I understand what you're trying to do, I'm not sure it's a reasonable goal for Buildroot to be able to provide binary compatibility between systems generated by different Buildroot versions. We regularly update libraries to their latest upstream versions, and sometimes they break the ABI compatibility. I don't think we want to enter the game of ensuring that ABI compatibility is ensured between Buildroot versions. If you're building a program with a given Buildroot SDK, it should be executed on the Buildroot system that matches that SDK. Best regards, Thomas -- Thomas Petazzoni, CTO, Bootlin Embedded Linux and Kernel engineering https://bootlin.com