reproduce (this is a W=1 build): git remote add powerpc https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git git fetch powerpc next git checkout powerpc/next b4 shazam https://lore.kernel.org/r/a7bdbbb14d8635c1e33ada7982cf2cd1a8321e5c.1723817900.git.christophe.leroy@csgroup.eu # save the config file mkdir build_dir && cp config build_dir/.config make W=1 O=build_dir ARCH=x86_64 olddefconfig make W=1 O=build_dir ARCH=x86_64 SHELL=/bin/bash