From mboxrd@z Thu Jan 1 00:00:00 1970 From: Thomas Petazzoni Date: Wed, 20 Jan 2016 23:05:51 +0100 Subject: [Buildroot] [PATCH 2/3] defconfigs: use the new headers-version-same-as-kernel-version option In-Reply-To: References: <811e1f5fe52c239010c412ce9f22b307d115cfcf.1453314776.git.yann.morin.1998@free.fr> <20160120213824.686c94fb@free-electrons.com> <87powwrlbr.fsf@dell.be.48ers.dk> Message-ID: <20160120230551.783353ab@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 Steve Calfee, On Wed, 20 Jan 2016 13:37:56 -0800, Steve Calfee wrote: > Can we still have different header and kernel versions? > > As I understand it we have to rebuild the toolchain when we change > header versions. So if I have a working embedded system based on > kernel x and am trying to get a new one working with kernel x+1, I > really don't want to change the kernel header version. In this case > they should be backward compatible. And rebuilding the toolchain is > such a pain that I always use an external toolchain, even if using the > buildroot internal built one. > > So as long as I can still have separate header/kernel versions, I am > happy with this change. Otherwise, it will be a pain with more full > rebuilds. What Yann is adding is just another option to choose the kernel headers version. The other options (to use 4.4, a custom version, etc.) remain in place. Best regards, Thomas -- Thomas Petazzoni, CTO, Free Electrons Embedded Linux, Kernel and Android engineering http://free-electrons.com