Reputation: 75
Debian 8 x64, buildroot 2016.02 / 2016-05-07 / 2016-05-13.
After make menuconfig
and set some settings I run make
. There is an error appears:
linux/linux.mk:424: *** No kernel defconfig name specified, check your BR2_LINUX_KERNEL_DEFCONFIG setting. Stop.
This answer does not help: my arch/arm/configs/
folder does not exist in every release/snapshot I've tried. There is only arch
folder with this content:
-rw-r--r-- 1 user user 11K May 12 19:21 Config.in
-rw-r--r-- 1 user user 176 May 12 19:21 Config.in.aarch64
-rw-r--r-- 1 user user 1.7K May 12 19:21 Config.in.arc
-rw-r--r-- 1 user user 15K May 12 19:21 Config.in.arm
-rw-r--r-- 1 user user 2.2K May 12 19:21 Config.in.bfin
-rw-r--r-- 1 user user 735 May 12 19:21 Config.in.m68k
-rw-r--r-- 1 user user 279 May 12 19:21 Config.in.microblaze
-rw-r--r-- 1 user user 2.1K May 12 19:21 Config.in.mips
-rw-r--r-- 1 user user 70 May 12 19:21 Config.in.nios2
-rw-r--r-- 1 user user 5.5K May 12 19:21 Config.in.powerpc
-rw-r--r-- 1 user user 693 May 12 19:21 Config.in.sh
-rw-r--r-- 1 user user 617 May 12 19:21 Config.in.sparc
-rw-r--r-- 1 user user 7.5K May 12 19:21 Config.in.x86
-rw-r--r-- 1 user user 1.5K May 12 19:21 Config.in.xtensa
I've tried to create arch/arm/configs/
folder and put there arch/Config.in.arm
file (renamed to arm_defconfig
/whatever) or empty file (renamed).
Whatever Kernel - Defconfig name
I set, it does not helps.
make BR2_LINUX_KERNEL_DEFCONFIG
also does not helps. Option is not documented in Buildroot user manual.
make linux-menuconfig
returns same error if no Kernel - Defconfig name
seted or
Can't find default configuration "arch/arm/configs/name_defconfig"!
where name
is Kernel - Defconfig name
variable. I've tried to set this to arm
, BR2_LINUX_KERNEL_DEFCONFIG
and many other names.
Can you help me, how to set default kernel configuration from buildroot developers?
Upvotes: 7
Views: 12533
Reputation: 3494
The kernel defconfig is a configuration file in the kernel tree, not the buildroot tree. You have to look in arch/arm/configs
in the kernel. Find the defconfig there that is appropriate for your target CPU. If you are not using an upstream kernel, you'll have to check with the vendor which defconfig to use. Remember to remove the _defconfig
part of the name.
If you really have no idea at all, multi_v5
and multi_v7
are safe options: they include support for all possible processors with an ARMv5 resp. ARMv7 architecture.
You will probably encounter the same issue with the device tree. You can find the device trees (the .dts
files) in arch/arm/boot/dts
in the kernel tree. This one does have to match exactly with your board.
Upvotes: 7