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kbuild: make KBUILD_NOCMDDEP=1 handle empty built-in.o 

Based on a patch by Rabin Vincent.

Fix building with KBUILD_NOCMDDEP=1, which currently does not work
because it does not build built-in.o with no dependencies:

  LD      fs/notify/built-in.o
ld: cannot find fs/notify/dnotify/built-in.o: No such file or directory
ld: cannot find fs/notify/inotify/built-in.o: No such file or directory
ld: cannot find fs/notify/fanotify/built-in.o: No such file or directory

Reported-and-tested-by: Rabin Vincent <rabin@rab.in>
Signed-off-by: Michal Marek <mmarek@suse.cz>
This commit is contained in:
Michal Marek 2011-05-16 16:37:34 +02:00
parent e0a04b11e4
commit c4d5ee1398
1 changed files with 2 additions and 0 deletions
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2
scripts/Kbuild.include
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@ -197,6 +197,8 @@ ifneq ($(KBUILD_NOCMDDEP),1)
# User may override this check using make KBUILD_NOCMDDEP=1
arg-check = $(strip $(filter-out $(cmd_$(1)), $(cmd_$@)) \
$(filter-out $(cmd_$@), $(cmd_$(1))) )
else
arg-check = $(if $(strip $(cmd_$@)),,1)
endif
# >'< substitution is for echo to work,