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kbuild: Use relative path when building in the source tree

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When not using O=, $(srctree) refers to the same directory as
$(objtree), so we can set it to '.' as well. This makes the default
include path more compact and results in more readable messages from the
compiler. The only case where we need the absolute path is when creating
the 'source' symlink in /lib/modules.

Acked-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: Michal Marek <mmarek@suse.cz>
This commit is contained in:
Michal Marek 2014-04-25 17:36:14 +02:00
commit 890676c65d
1 changed files with 2 additions and 2 deletions
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4
Makefile
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@ -149,7 +149,7 @@ else
_all: modules
endif
srctree := $(if $(KBUILD_SRC),$(KBUILD_SRC),$(CURDIR))
srctree := $(if $(KBUILD_SRC),$(KBUILD_SRC),.)
objtree := .
src := $(srctree)
obj := $(objtree)
@ -1059,7 +1059,7 @@ _modinst_:
@rm -rf $(MODLIB)/kernel
@rm -f $(MODLIB)/source
@mkdir -p $(MODLIB)/kernel
@ln -s $(srctree) $(MODLIB)/source
@ln -s `cd $(srctree) && /bin/pwd` $(MODLIB)/source
@if [ ! $(objtree) -ef $(MODLIB)/build ]; then \
rm -f $(MODLIB)/build ; \
ln -s $(CURDIR) $(MODLIB)/build ; \