0a8820e7f807 ("kbuild: refactor subdir-ym calculation")
56d589361572 ("kbuild: do not create orphan built-in.a or obj-y objects")
33e84f2e7965 ("kbuild: treat an object as multi-used when $(foo-) is set")
f98fe47ce51d ("kbuild: link $(real-obj-y) instead of $(obj-y) into built-in.a")
f5f336812c23 ("kbuild: rename real-objs-y/m to real-obj-y/m")
f49821ee32b7 ("kbuild: rename built-in.o to built-in.a")
6358d6e8b984 ("kbuild: remove incremental linking option")
5e2fda4776bb ("Merge tag 'kbuild-v4.15-2' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild")