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 <[email protected]> Signed-off-by: Michal Marek <[email protected]>
ambv · May 16, 2011 · c4d5ee1 · c4d5ee1
1 parent e0a04b1
commit c4d5ee1
Showing 1 changed file with 2 additions and 0 deletions.
diff --git a/scripts/Kbuild.include b/scripts/Kbuild.include
@@ -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,