[BACKPORT 4.4.y 14/25] kbuild: setlocalversion: print error to STDERR

From: Arnd Bergmann
Date: Fri Mar 22 2019 - 11:48:03 EST

From: Wolfram Sang <wsa@xxxxxxxxxxxxx>

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@xxxxxxxxxxxxx>
Signed-off-by: Michal Marek <mmarek@xxxxxxxx>
(cherry picked from commit 78283edf2c01c38eb840a3de5ffd18fe2992ab64)
Signed-off-by: Arnd Bergmann <arnd@xxxxxxxx>
scripts/setlocalversion | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/scripts/setlocalversion b/scripts/setlocalversion
index 63d91e22ed7c..966dd3924ea9 100755
--- a/scripts/setlocalversion
+++ b/scripts/setlocalversion
@@ -143,7 +143,7 @@ fi
if test -e include/config/auto.conf; then
. include/config/auto.conf
- 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