linux-kernel - [PATCH] kbuild: remove duplicated arch/*/include/generated/uapi include path

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Date:   Tue,  6 Jun 2017 16:15:28 +0900
From:   Masahiro Yamada <yamada.masahiro@...ionext.com>
To:     linux-kbuild@...r.kernel.org
Cc:     Michal Marek <mmarek@...e.com>, Arnd Bergmann <arnd@...db.de>,
        James Hogan <james.hogan@...tec.com>,
        Florian Fainelli <f.fainelli@...il.com>,
        Masahiro Yamada <yamada.masahiro@...ionext.com>,
        linux-kernel@...r.kernel.org
Subject: [PATCH] kbuild: remove duplicated arch/*/include/generated/uapi include path

Commit 90ac086bca10 ("Makefile: include arch/*/include/generated/uapi
before .../generated") introduced this for bisect'ability.  The commit
chose to promote arch/*/include/generated/uapi in the search path
rather than cleaning stale headers.

After all, we found that approach was not enough, and ended up with
cleaning stale headers by commit cda2c65f981d ("kbuild: Remove stale
asm-generic wrappers").

So, the extra search path is no longer needed because Kbuild invokes
scripts/Makefile.asm-generic and remove stale headers before it starts
descending.

This commit is also reverting commit dc33db7c338e ("Kbuild: avoid
duplicate include path") because we have no more duplicated path.

Signed-off-by: Masahiro Yamada <yamada.masahiro@...ionext.com>
---

 Makefile | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/Makefile b/Makefile
index 813ee12431b6..c2c212264752 100644
--- a/Makefile
+++ b/Makefile
@@ -387,12 +387,10 @@ USERINCLUDE    := \
 # Needed to be compatible with the O= option
 LINUXINCLUDE    := \
 		-I$(srctree)/arch/$(hdr-arch)/include \
-		-I$(objtree)/arch/$(hdr-arch)/include/generated/uapi \
 		-I$(objtree)/arch/$(hdr-arch)/include/generated \
 		$(if $(KBUILD_SRC), -I$(srctree)/include) \
-		-I$(objtree)/include
-
-LINUXINCLUDE	+= $(filter-out $(LINUXINCLUDE),$(USERINCLUDE))
+		-I$(objtree)/include \
+		$(USERINCLUDE)

 KBUILD_CPPFLAGS := -D__KERNEL__

-- 
2.7.4