linux-kernel - [PATCH] kbuild: setlocalversion: print error to STDERR

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Date:	Mon,  6 Jun 2016 21:00:38 +0200
From:	Wolfram Sang <wsa@...-dreams.de>
To:	linux-kbuild@...r.kernel.org
Cc:	linux-kernel@...r.kernel.org, Michal Marek <mmarek@...e.com>,
	Wolfram Sang <wsa@...-dreams.de>
Subject: [PATCH] kbuild: setlocalversion: print error to STDERR

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

diff --git a/scripts/setlocalversion b/scripts/setlocalversion
index 63d91e22ed7ccd..966dd3924ea9cb 100755
--- 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
 
-- 
2.8.1