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kbuild: fix directory traversal bug 

Previously kbuild choked over the following:
obj-y += ../../../arch/i386/kernel/bootflag.o

This has resulted in some rather ugly workarounds in
current x86_64 tree.
This patch fixes kbuild to allow the above and enable
potential cleanups in x86_64 and maybe in other places.

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
This commit is contained in:
Sam Ravnborg 2007-09-15 08:55:39 +02:00 committed by Sam Ravnborg
parent c01b171d91
commit f5fb976520
1 changed files with 3 additions and 3 deletions
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6
scripts/Makefile.lib
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@ -44,9 +44,9 @@ multi-objs-y := $(foreach m, $(multi-used-y), $($(m:.o=-objs)) $($(m:.o=-y)))
multi-objs-m := $(foreach m, $(multi-used-m), $($(m:.o=-objs)) $($(m:.o=-y))) multi-objs-m := $(foreach m, $(multi-used-m), $($(m:.o=-objs)) $($(m:.o=-y)))
multi-objs := $(multi-objs-y) $(multi-objs-m) multi-objs := $(multi-objs-y) $(multi-objs-m)
# $(subdir-obj-y) is the list of objects in $(obj-y) which do not live # $(subdir-obj-y) is the list of objects in $(obj-y) which uses dir/ to
# in the local directory # tell kbuild to descend
subdir-obj-y := $(foreach o,$(obj-y),$(if $(filter-out $(o),$(notdir $(o))),$(o))) subdir-obj-y := $(filter %/built-in.o, $(obj-y))
# $(obj-dirs) is a list of directories that contain object files # $(obj-dirs) is a list of directories that contain object files
obj-dirs := $(dir $(multi-objs) $(subdir-obj-y)) obj-dirs := $(dir $(multi-objs) $(subdir-obj-y))