I have followed the Gentoo custom initramfs tutorial so that I am booting to an isolated filesystem based on Busybox. The only difference between what I am doing and what they do is that I am running on Ubuntu and download the latest Busybox x86_64 binary instead of using emerge. My goal here is just to be able to get through kernel bootup and into some sort of minimal filesystem.On my Ubuntu 16.04 system, I am running [ 2.893799] md: Waiting for all devices to be available before autodetect [ 2.894724] md: If you don't use raid, use raid=noautodetect [ 2.913768] md: Autodetecting RAID arrays. I just made my first device driver patch at work, which was exciting, and I want to continue learning more. Self- taught kernel hacker here (and still maintain a small part of it).When the ABI used for binary applications and libraries is changed, you will risk getting linker errors or malfunctioning programs unless you rebuild all libraries that use C code.For this last couple of months my DVD player has been dead or runs for a short time and then errors out. If it's coming up with readings like that, I'd say that the onboard firmware has gone to meet its maker in the great digital beyond. Pappy_________________This space left intentionally blank, except for these ASCII symbols. Designed by Kyle Manna © 2003; Style derived from original sub Silver theme. Thus you have to help portage to guide it to upgrade side by masking old packages and disabling autounmask feature.Thus I don’t think this particular hack can be easily encoded in portage.
In the absence of any secondary system to hack on, dual boot your main system and use the second system to work on - but make sure you back up everything, just in case.
When upgrading GCC simply switch compiler version and rebuild libtool: Enjoy the new compiler!
GCC upgrading has always been mystified, with suggestions ranging from "users do not need to do anything" to "users will need to rebuild the entire system twice".
Most of this fear, uncertainty and doubt comes from the confusion surrounding ABI incompatibility. Some time ago, the execution of this command has been integrated in the package deployments itself (through the toolchain eclass) so there is no need for users to call this themselves anymore.
The reason we need to rebuild libtool after the upgrade of versions is because of its main purpose: libtool is a toolset that aggregates platform-specific code in a generic interface, allowing applications to build against shared libraries without needing to deal with the platform specific aspects of shared libraries.
What is the best way to setup a test environment while working through Linux Device Drivers? [ 2.920719] VFS: Cannot open root device "(null)" or unknown-block(0,0): error -6 [ 2.921465] Please append a correct "root=" boot option; here are the available partitions: [ 2.922493] 0b00 1048575 sr0 driver: sr [ 2.923069] Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(0,0) [ 2.923101] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 4.8.0-rc1 #18 [ 2.923101] Hardware name: QEMU Standard PC (i440FX PIIX, 1996), BIOS Ubuntu-1.8.2-1ubuntu1 04/01/2014 [ 2.923101] 0000000000000000 ffff8800070ffde0 ffffffff81328158 ffff8800066aa000 [ 2.923101] ffffffff81b98e58 ffff8800070ffe60 ffffffff81124120 0000000000000010 [ 2.923101] ffff8800070ffe70 ffff8800070ffe08 ffffffff8112441e ffff8800070ffe78 [ 2.923101] Call Trace: [ 2.923101] [ that the local machine does.