Error with Kernel config - first time setup (Developer package)

[JayDev]

I am trying to setup the developer package on my system and had an issue with the following line when going through the README.HOW_TO.txt file in the developer package:

$ make ARCH=arm O="${OUTPUT_BUILD_DIR}" multi_v7_defconfig fragment*.config
make: *** No rule to make target 'multi_v7_defconfig'.  Stop.

For context, it had me do the following to prepare the kernel source (to apply the patches to the kernal source directory, ~/STM32MPU-Ecosystem-v5.0.0/Developer-Package/stm32mp1-openstlinux-6.1-yocto-mickledore-mp1-v23.06.21/sources/arm-ostl-linux-gnueabi/linux-stm32mp-6.1.28-stm32mp-r1-r0:(

tar xf linux-6.1.28.tar.xz
cd linux-6.1.28
for p in `ls -1 ../*.patch`; do patch -p1 < $p; done

This had no issues and had me move on to section 5 which had me run the following from the same folder (~/STM32MPU-Ecosystem-v5.0.0/Developer-Package/stm32mp1-openstlinux-6.1-yocto-mickledore-mp1-v23.06.21/sources/arm-ostl-linux-gnueabi/linux-stm32mp-6.1.28-stm32mp-r1-r0, maybe that is the source of the issue?  I assumed that is the "directory to kernel source code" as it specified that in a previous section):

cd <directory to kernel source code>
export OUTPUT_BUILD_DIR=$PWD/../build
mkdir -p ${OUTPUT_BUILD_DIR}
make ARCH=arm O="${OUTPUT_BUILD_DIR}" multi_v7_defconfig fragment*.config

I can see the "build" folder in "~/STM32MPU-Ecosystem-v5.0.0/Developer-Package/stm32mp1-openstlinux-6.1-yocto-mickledore-mp1-v23.06.21/sources/arm-ostl-linux-gnueabi", which is where I assume it wanted it (I could be wrong).

Unfortunately, when running the last line, I got the following error (as mentioned above):

make: *** No rule to make target 'multi_v7_defconfig'.  Stop.

I went searching for the file it was referring to and I could find it in ~/STM32MPU-Ecosystem-v5.0.0/Developer-Package/stm32mp1-openstlinux-6.1-yocto-mickledore-mp1-v23.06.21/sources/arm-ostl-linux-gnueabi/linux-stm32mp-6.1.28-stm32mp-r1-r0/linux-6.1.28/arch/arm/configs.

I've been very careful to go through each step and make sure I don't miss anything and the only thing I can think of is I'm running this from the wrong folder or there was an issue with the files used or it's missing something from the patch process in section 4 of the readme guide?

I've been poking at it for a while and figured I'd see if anyone else had any ideas.  Thanks!

[Erwan SZYMANSKI]

Hello @JayDev ,
Like this, I do not see something special. Maybe few things to double check :

• Is your SDK well sourced in your shell ? (echo $CC to verify if your tool-chain is well defined)
• before doing your make command, maybe echo $OUTPUT_BUILD_DIR to check that your directory is well present
• Check that you are well in kernel source code folder (with ls command, you should see the following folders : https://github.com/STMicroelectronics/linux)

Kind regards,
Erwan.

[JayDev]

Thanks for the info, @Erwan SZYMANSKI !

Looks like you found the issue.  I had been checking in the:

~/STM32MPU-Ecosystem-v5.0.0/Developer-Package/stm32mp1-openstlinux-6.1-yocto-mickledore-mp1-v23.06.21/sources/arm-ostl-linux-gnueabi/linux-stm32mp-6.1.28-stm32mp-r1-r0

folder, which section 3 of the readme referred to as the "kernel source directory" (From the readme file: "In the kernel source directory (sources/*/linux-stm32mp-6.1.28-stm32mp-r1-r0)",.

From your post, I should have a different folder structure, which is actually what I have in:

~/STM32MPU-Ecosystem-v5.0.0/Developer-Package/stm32mp1-openstlinux-6.1-yocto-mickledore-mp1-v23.06.21/sources/arm-ostl-linux-gnueabi/linux-stm32mp-6.1.28-stm32mp-r1-r0/linux-6.1.28

It does look like the $CC is giving me the correct output in this shell but if I open it in another window, it doesn't return anything.  So it appears I'll need to redo the following line every time?

source /home/local/DEVNET/jay/STM32MPU-Ecosystem-v5.0.0/Developer-Package/SDK/environment-setup-cortexa7t2hf-neon-vfpv4-ostl-linux-gnueabi

Thanks again for the quick reply!