linux-kernel - [PATCH 4.4 025/131] kbuild: setlocalversion: print error to STDERR

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Date:   Mon,  1 Apr 2019 19:01:35 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Wolfram Sang <wsa@...-dreams.de>,
        Michal Marek <mmarek@...e.com>, Arnd Bergmann <arnd@...db.de>
Subject: [PATCH 4.4 025/131] kbuild: setlocalversion: print error to STDERR

4.4-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Wolfram Sang <wsa@...-dreams.de>

commit 78283edf2c01c38eb840a3de5ffd18fe2992ab64 upstream.

I tried to use 'make O=...' from an unclean source tree. This triggered
the error path of setlocalversion. But by printing to STDOUT, it created
a broken localversion which then caused another (unrelated) error:

"4.7.0-rc2Error: kernelrelease not valid - run make prepare to update it" exceeds 64 characters

After printing to STDERR, the true build error gets displayed later:

  /home/wsa/Kernel/linux is not clean, please run 'make mrproper'
  in the '/home/wsa/Kernel/linux' directory.

Signed-off-by: Wolfram Sang <wsa@...-dreams.de>
Signed-off-by: Michal Marek <mmarek@...e.com>
Signed-off-by: Arnd Bergmann <arnd@...db.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 scripts/setlocalversion |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/scripts/setlocalversion
+++ b/scripts/setlocalversion
@@ -143,7 +143,7 @@ fi
 if test -e include/config/auto.conf; then
 	. include/config/auto.conf
 else
-	echo "Error: kernelrelease not valid - run 'make prepare' to update it"
+	echo "Error: kernelrelease not valid - run 'make prepare' to update it" >&2
 	exit 1
 fi