From mboxrd@z Thu Jan 1 00:00:00 1970 From: Thomas Petazzoni Date: Wed, 17 Oct 2012 19:23:37 +0200 Subject: [Buildroot] BuildRoot not starting with Udev In-Reply-To: References: <20121016194117.2ed3a609@skate> Message-ID: <20121017192337.7f1ac3eb@skate> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: buildroot@busybox.net Hello Antoine, On Wed, 17 Oct 2012 10:22:22 +0200, Antoine Caurier wrote: > I found one of your previous post, where you said that if kernel was > build by buildroot, it should be ok. So I was thinking that it should > be ok just activating udev as I am building kernel with buildroot. > > I tried to manually set DEVTMPFS in linux-menuconfig, and then > recompile the kernel (with buildroot), and it is now working. > > Is it normal to have manualy to set DEVTMPFS in kernel configuration > in order to have udev working? No, but it depends on what you did exactly. If you did: 1) Configure /dev management as static 2) Configure your kernel 3) Build Buildroot 4) Reconfigure /dev management as udev 5) Build Buildroot Then yes, it is normal: Buildroot doesn't try to be smart about this kind of dependency. If you change the /dev management style, you are responsible to restart the build of the kernel (make linux-dirclean; make) so that it gets a configuration that is compatible with a dynamic /dev management. Best regards, Thomas -- Thomas Petazzoni, Free Electrons Kernel, drivers, real-time and embedded Linux development, consulting, training and support. http://free-electrons.com