I deleted three lines
../include/../lib/lua-5.3.5/src/lua.h \
../include/../lib/lua-5.3.5/src/lualib.h \
../include/../lib/lua-5.3.5/src/lauxlib.h \
from $(CONFIG_H) but other than that, this is as-is with unmodified
'make depend'. depend.awk will need to be taught about suppressing
those lua headers.