From mboxrd@z Thu Jan 1 00:00:00 1970 From: Thomas Petazzoni Date: Sun, 21 Dec 2014 23:40:06 +0100 Subject: [Buildroot] [PATCH 00/14] Add support for U-Boots Kbuild & Kconfig build system In-Reply-To: <1418426171-3483-1-git-send-email-jkrause@posteo.de> References: <1418426171-3483-1-git-send-email-jkrause@posteo.de> Message-ID: <20141221234006.311fcde0@free-electrons.com> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: buildroot@busybox.net Dear J?rg Krause, On Sat, 13 Dec 2014 00:15:57 +0100, J?rg Krause wrote: > This patch series adds to the bootloader Das U-Boot: > * Update to the latest stable version 2014.10 > * Support for its Kbuild & Kconfig build system > * Documentation in the manual > * Fixes and adjustments to the packages infrastructure Thanks for working on this, definitely good to see someone tackling the bump to the first kconfig-enabled U-Boot version. There is however one big issue with your patch series: I believe it breaks backward compatibility with U-Boot versions older than 2014.10. And a *lot* of people are using old versions of U-Boot, to which they are stuck due to the old version being their only choice for a given piece of hardware. So we clearly need to continue to support older versions of U-Boot, that don't have the kconfig stuff. I just gave a try, and it seems like the old U-Boot way of configuring/building things apparently still works with U-Boot 2014.10. So your PATCH 01/14 is probably OK. However starting from 02/14, I believe you'll be breaking things for U-Boot versions older than 2014.10. Can you work on a solution that preserves compatibility? Thanks, Thomas -- Thomas Petazzoni, CTO, Free Electrons Embedded Linux, Kernel and Android engineering http://free-electrons.com