Hello, I'm having trouble compiling the kernel. I've followed the instructions in the following forum post (The user guide doesn't work and jumps over many steps) http://www.udoo.org/forum/viewtopic.php?f=24&t=798&hilit=compile+kernel I'm getting a different error. CC drivers/regulator/dummy.o CC drivers/regulator/fixed.o CC drivers/rtc/rtc-lib.o make[2]: *** No rule to make target `drivers/rtc/class.o', needed by `drivers/rtc/rtc-core.o'. Stop. ... LD drivers/scsi/built-in.o make: *** [drivers] Error 2 root@udoo:/usr/src/kernel# I'm struggling with the Linux, I'm more of an Arduino guy. I need UART3 working. any help would be great!
Re: Ubuntu Kernel won't compile In order to help, more information is needed. Best would be if you listed all the steps you've done (copy and paste if possible).
Re: Ubuntu Kernel won't compile Hello Flipsa, I successfully built the Kernel last night using the same steps that fail, but I needed to use the Ubuntu 11.10 image instead of the 12 image. Here are the exact steps from my Build Doc using a clean SD. Build and use Ubuntu 11.10 SD image connect to the network Default user/pass is ubuntu/unbuntu SUDO SU apt-get update --refresh software list using mkdir -p /usr/src cd /usr/src apt-get install build-essential apt-get install libncurses5-dev download and compile the latest boot-mkimage wget ftp://ftp.denx.de/pub/u-boot/u-boot-2013.10.tar.bz2 bzip2 -d u-boot-2013.10.tar.bz2 tar xf u-boot-2013.10.tar cd u-boot-2013.10 make -j5 tools cp tools/mkimage /usr/local/bin/ cd /usr/src/ Download Kernel source from https://github.com/UDOOboard/Kernel_Unico open Kernel zip with Xarchiver and put it in a kernel folder via cp -r /home/ubuntu/Kernel_unico-master/ /usr/src/ mv Kernel_Unico-master kernel edit/copy board-mx6qd_seco_UDOO.h it its in /kernel/arch/arm/mach-mx6 cd kernel uname -r —get kernel version 3.0.35 make ARCH=arm UDOO_defconfig make ARCH=arm menuconfig make --- CRASHES HERE with the previously mentioned error if using Ubuntu 12 image SD make modules_install make install make -j5 uImage As you can I see I am not using the cross compiler but compiling everything directly on the UDOO Quad. I may stay on Ubuntu 11.10, I find it faster then Ubuntu 12, but there seems to something missing in the 12 image since every time I try to compile it I'd get the "No rule to make target `drivers/rtc/class.o', " errors. Cam
I've succesfully rebuilt the kernel for Linaro / Ubuntu 12.04 many times already, but have not touched anything related to real-time functionality (but some stuff/modules are already activated AFAIR). But as long as it works for you now (even with the older 11.10) i guess all is good
Just a couple more questions for the sake of curiosity. Are you using the Quad source code? and are you compiling on the UDOO itself or using the Cross Compiler? I'm really curious why the 12.04 build isn't working for me; there must be something different that I'm either using or doing. I haven't changed anything for the RTC, that's just where it fails in the Make process. I'm just interested in enabling a second serial channel so that I can communicate to a second Arduino via serial.
Yes, I have a quad, too. And yes, I am compiling directly on the udoo. Check out my other posts if you want (e.g. this one: viewtopic.php?f=27&t=821). You'll see, I also ran into a couple of problems, but none like the one you had. I have not yet had the time to do anything with the Arduino though, so I can't help with that. I already have some ideas for projects, just not the time
Oh, I just remembered one thing: when I first downloaded the Unico kernel sources, I downloaded via http from github (and not using git on the command line) and unzipped the sources. As far as i remember, either the download or the unzipping must have gone wrong somehow, because I saw some really weird errors. Only after using git and cloning the sources, everything was smooth. Maybe you can try that, since it seems you also downloaded and unzipped like I did. Not sure though, and it might even have been something unrelated. But it might be worth trying...
Oh, and i noticed one more thing: if you are compiling on the udoo itself, you don't need to specify the target when building the kernel (ARCH=arm). I don't think this should be a problem, but who knows...
On Ubuntu 15.04 and UDOO NEO if also saw above's original error message: No rule to make target `drivers/rtc/class.o', needed by `drivers/rtc/rtc-core.o'. Stop. I followed: http://www.udoo.org/docs/Advanced_Setup/Compile_The_Linux_Kernel_And_The_Modules (And by the way, I used Ubuntu's cross compiler, because the one provided on the UDOO website isn't compatible to recent 64 bit Ubuntu systems. I did so by apt-get install gcc-arm-linux-gnueabi and then using CROSS_COMPILE=/usr/bin/arm-linux-gnueabi- . Using a generic compiler is ok for me, because it's only for a training.) Then on the step make ARCH=arm menuconfig I disabled DeviceDrivers/RealtimeClock Then it compiles ... at least ...
Dear Roelof, you followed the guide for UDOO QUAD. Here's the guide for UDOO NEO. Anyway you talk about 15.04. Should I assume you compiled it by yourself?
