From: Prarit Bhargava on
gitlab.com
https://gitlab.com/cki-project/kernel-ark/-/merge_requests/2395#note_1339...
Should
```
ifneq (,$(findstring n,$(firstword -$MAKEFLAGS)))
```
actually be
```
ifneq (,$(findstring n,$(firstword -$(MAKEFLAGS))))
```
ie) did you miss the () around the MAKEFLAGS variable? I'm not familiar
with firstword but it seems like you still need to treat MAKEFLAGS as a
variable.