linux-kernel - [PATCH] kbuild: deb-pkg: fix too low build version number

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Message-Id: <1541477885-24875-1-git-send-email-yamada.masahiro@socionext.com>
Date:   Tue,  6 Nov 2018 13:18:05 +0900
From:   Masahiro Yamada <yamada.masahiro@...ionext.com>
To:     linux-kbuild@...r.kernel.org
Cc:     Riku Voipio <riku.voipio@...aro.org>,
        Ben Hutchings <ben@...adent.org.uk>,
        Doug Smythies <dsmythies@...us.net>,
        Masahiro Yamada <yamada.masahiro@...ionext.com>,
        Michal Marek <michal.lkml@...kovi.net>,
        linux-kernel@...r.kernel.org
Subject: [PATCH] kbuild: deb-pkg: fix too low build version number

Since commit b41d920acff8 ("kbuild: deb-pkg: split generating packaging
and build"), the build version of the kernel contained in a deb package
is too low by 1.

Prior to the bad commit, the kernel was built first, then the number
in .version file was read out, and written into the debian control file.

Now, the debian control file is created before the kernel is actually
compiled, which is causing the version number mismatch.

Let the mkdebian script pass KBUILD_BUILD_VERSION=${revision} to require
the build system to use the specified version number.

Fixes: b41d920acff8 ("kbuild: deb-pkg: split generating packaging and build")
Reported-by: Doug Smythies <dsmythies@...us.net>
Signed-off-by: Masahiro Yamada <yamada.masahiro@...ionext.com>
---

 scripts/package/mkdebian | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/scripts/package/mkdebian b/scripts/package/mkdebian
index 663a7f3..edcad61 100755
--- a/scripts/package/mkdebian
+++ b/scripts/package/mkdebian
@@ -88,6 +88,7 @@ set_debarch() {
 version=$KERNELRELEASE
 if [ -n "$KDEB_PKGVERSION" ]; then
 	packageversion=$KDEB_PKGVERSION
+	revision=${packageversion##*-}
 else
 	revision=$(cat .version 2>/dev/null||echo 1)
 	packageversion=$version-$revision
@@ -205,10 +206,12 @@ cat <<EOF > debian/rules
 #!$(command -v $MAKE) -f
 
 build:
-	\$(MAKE) KERNELRELEASE=${version} ARCH=${ARCH} KBUILD_SRC=
+	\$(MAKE) KERNELRELEASE=${version} ARCH=${ARCH} \
+	KBUILD_BUILD_VERSION=${revision} KBUILD_SRC=
 
 binary-arch:
-	\$(MAKE) KERNELRELEASE=${version} ARCH=${ARCH} KBUILD_SRC= intdeb-pkg
+	\$(MAKE) KERNELRELEASE=${version} ARCH=${ARCH} \
+	KBUILD_BUILD_VERSION=${revision} KBUILD_SRC= intdeb-pkg
 
 clean:
 	rm -rf debian/*tmp debian/files
-- 
2.7.4