Building and deploying the Linux kernel for the first time. command- make ARCH=arm uImage vmlinux dtbs LOADADDR=0xC2000040 O="$PWD/../build"
*** The source tree is not clean, please run 'make ARCH=arm mrproper'
*** in /home/developer-package/stm32mp1-openstlinux-5.10-dunfell-mp1-21-03-31/sources/arm-ostl-linux-gnueabi/linux-stm32mp-5.10.10-r0/linux-5.10.10
***
make[2]: *** [outputmakefile] Error 1
make[1]: *** [/home/developer-package/stm32mp1-openstlinux-5.10-dunfell-mp1-21-03-31/sources/arm-ostl-linux-gnueabi/linux-stm32mp-5.10.10-r0/linux-5.10.10/include/config/auto.conf.cmd] Error 2
make[1]: Leaving directory `/home/developer-package/stm32mp1-openstlinux-5.10-dunfell-mp1-21-03-31/sources/arm-ostl-linux-gnueabi/linux-stm32mp-5.10.10-r0/build'
make: *** [__sub-make] Error 2
