[Buildroot] [PATCH 1/1] package/libpng: allow selection of older libpng versions

[Yann E. MORIN]

Thomas, Paul, Al,

On 2019-07-21 15:49 +0200, Thomas Petazzoni spake thusly:
> On Sun,  7 Jul 2019 12:52:24 -0400
> Paul Cercueil <paul at crapouillou.net> 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.
> 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.

Agreed.

> If you're building a program with a given Buildroot SDK, it should be
> executed on the Buildroot system that matches that SDK.

Agreed.

Regards,
Yann E. MORIN.

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