linux-kernel - [PATCH] locking/atomics: Fix out-of-tree build

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Date:   Thu,  8 Nov 2018 20:41:28 +0100
From:   Borislav Petkov <bp@...en8.de>
To:     X86 ML <x86@...nel.org>
Cc:     LKML <linux-kernel@...r.kernel.org>, arnd@...db.de,
        aryabinin@...tuozzo.com, Boqun Feng <boqun.feng@...il.com>,
        catalin.marinas@....com, dvyukov@...gle.com, glider@...gle.com,
        Ingo Molnar <mingo@...nel.org>,
        linux-arm-kernel@...ts.infradead.org, linuxdrivers@...otech.com,
        Mark Rutland <mark.rutland@....com>,
        Peter Zijlstra <peterz@...radead.org>,
        Will Deacon <will.deacon@....com>
Subject: [PATCH] locking/atomics: Fix out-of-tree build

From: Borislav Petkov <bp@...e.de>

Building a kernel out of tree with:

  make O=/tmp/b oldconfig
  cd /tmp/b
  make

gives this:

  CALL    /mnt/kernel/kernel/linux/scripts/atomic/check-atomics.sh
/bin/bash: scripts/atomic/check-atomics.sh: No such file or directory
make[3]: *** [/mnt/kernel/kernel/linux/./Kbuild:86: old-atomics] Error 127
make[3]: *** Waiting for unfinished jobs....

Make the command use the proper build prerequisite which is the absolute
path to the script.

Fixes: 8d32588077bd ("locking/atomics: Check generated headers are up-to-date")
Signed-off-by: Borislav Petkov <bp@...e.de>
Cc: arnd@...db.de
Cc: aryabinin@...tuozzo.com
Cc: Boqun Feng <boqun.feng@...il.com>
Cc: catalin.marinas@....com
Cc: dvyukov@...gle.com
Cc: glider@...gle.com
Cc: Ingo Molnar <mingo@...nel.org>
Cc: linux-arm-kernel@...ts.infradead.org
Cc: linuxdrivers@...otech.com
Cc: Mark Rutland <mark.rutland@....com>
Cc: Peter Zijlstra (Intel) <peterz@...radead.org>
Cc: Will Deacon <will.deacon@....com>
---
 Kbuild | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Kbuild b/Kbuild
index 47c9fe175bd9..780048056ac5 100644
--- a/Kbuild
+++ b/Kbuild
@@ -80,7 +80,7 @@ always += old-atomics
 targets += old-atomics
 
 quiet_cmd_atomics = CALL    $<
-      cmd_atomics = $(CONFIG_SHELL) scripts/atomic/check-atomics.sh
+      cmd_atomics = $(CONFIG_SHELL) $<
 
 old-atomics: scripts/atomic/check-atomics.sh FORCE
 	$(call cmd,atomics)
-- 
2.19.1