Re: [opensuse-arm] Build a downstream kernel in OBS

25 Jul 2017

      On 24.07.17 20:49, Oscar C wrote:
...
Hi,
Is there a guide on how to build a downstream kernel in obs like a 
upstream genuine kernel?
I have a CHIP allwinner R8 with debian but I would like to use opensuse 
instead.
I found a link in the wiki to a script which is supposed to help with 
this (http://users.suse.com/~dmueller/contrib_kernel.sh) but like is 
dead to me.
Hm, looks like users.suse.com does not want to talk to anyone outside of 
the SUSE network. Hooray.

Either way, here's the script. You may need to adapt it a bit, as it's 
been a while since I last used it. But overall it should still do what 
you expect.

Alex

---

#!/bin/bash
#
# Script to create an openSUSE Contrib kernel from downstream sources.
#
# Please use with care. No warranty granted if anything goes wrong. This
# file is public domain and free for everyone to use, distribute and modify.
#
# Author: Alexander Graf 
#
########

KERNEL_FLAVOR="$1"
KERNEL_ARCH="$2"
KERNEL_ARCHIVE="$3"
KERNEL_CONFIG="$4"
OBS_PRJ="$5"

# Sanity check command line
if [ ! "$1" -o ! "$2" -o ! "$3" -o ! "$4" -o ! "$5" ]; then
     echo "Syntax: $0 <kernel flavor> <arch> <kernel tar.xz> <kernel 
config> <osc repo>

Example: $0 midway armv7hl linux-midway-3.16.tar.xz linux-midway.config 
home:algraf:ARM:Factory:Contrib:Midway

Available architectures:

   armv6hl
   armv7hl
   arm64
"

     exit 1
fi

# Sanity check kernel
KERNEL_TAR_VERSION=$( tar tf "$KERNEL_ARCHIVE" | head -n1 )
if [ "${KERNEL_TAR_VERSION:0:6}" != "linux-" ]; then
     echo "ERROR: Invalid tar archive

Please provide a tar archive that contains the Linux tree inside
of a directory named as

   linux-version

such as

   linux-3.16-rc1"

     exit 1
fi

# Derive kernel version from tarball

KERNEL_VERSION="${KERNEL_TAR_VERSION:6}"
KERNEL_VERSION="$(basename $KERNEL_VERSION)"

# Sanity check arch

case $KERNEL_ARCH in
   armv6hl|armv7hl|arm64)
     ;;
   *)
     echo "ERROR! Invalid architecture.

Available architectures:

   armv6hl
   armv7hl
   arm64
"
     exit 1
     ;;
esac

###

if [ ! "$KERNEL_SOURCE_GIT" ]; then
     KERNEL_SOURCE_GIT=git://kernel.opensuse.org/kernel-source.git
     DEFAULT_KERNEL_SOURCE_GIT=1
fi

echo "Welcome to the openSUSE Contrib kernel creator.

We will now create a kernel-source package and a kernel-$KERNEL_FLAVOR 
package.
We will also add these two packages to your $OBS_PRJ repository.

The first thing I will do is to fetch the openSUSE kernel-source.git from

   $KERNEL_SOURCE_GIT
"

if [ "$DEFAULT_KERNEL_SOURCE_GIT" ]; then
     echo "If this takes too long for your taste, please keep a local 
copy of the
*most recent* kernel-source.git around and put its location into the
KERNEL_SOURCE_GIT environemnt variable.
"
fi

SRC=/dev/shm/kernel-source.$$

git clone $KERNEL_SOURCE_GIT $SRC
cp "$KERNEL_ARCHIVE" "$SRC/linux-${KERNEL_VERSION}.tar.xz"
cp "$KERNEL_CONFIG" "$SRC/config/armv6hl/$KERNEL_FLAVOR"
cp "$KERNEL_CONFIG" "$SRC/config/armv7hl/$KERNEL_FLAVOR"
cp "$KERNEL_CONFIG" "$SRC/config/arm64/$KERNEL_FLAVOR"

(
   cd $SRC
   echo patches.rpmify/firmware-path > series.conf
   echo "
+armv6hl        armv6hl/$KERNEL_FLAVOR
+armv7hl        armv7hl/$KERNEL_FLAVOR
+arm64          arm64/$KERNEL_FLAVOR
" > config.conf
   sed -i "s/^SRCVERSION=.*$/SRCVERSION=$KERNEL_VERSION/" rpm/config.sh
   ./scripts/sequence-patch.sh
   (
     cd tmp/linux-$KERNEL_VERSION-master/
     ./run_oldconfig.sh --flavor $KERNEL_FLAVOR -a $KERNEL_ARCH
   )
   ./scripts/tar-up.sh
)

echo "We finished assembling a kernel-source package. You can find it at

   $SRC/kernel-source.

The next step is to upload this to OBS.
"

osc rdelete -m x $OBS_PRJ kernel-source
osc rdelete -m x $OBS_PRJ kernel-$KERNEL_FLAVOR

osc meta pkg $OBS_PRJ kernel-source -F - << EOF
  <package project="$OBS_PRJ" name="kernel-source">
    <title>kernel-source</title>
    <description>
    </description>
  </package>
EOF

OSCDIR=/dev/shm/$$
mkdir $OSCDIR
(
   cd $OSCDIR
   osc co $OBS_PRJ kernel-source
   cd $OBS_PRJ/kernel-source
   cp $SRC/kernel-source/* .
   osc addremove
   osc ci -m "Add kernel sources"
)
osc linkpac -C copy $OBS_PRJ kernel-source $OBS_PRJ kernel-$KERNEL_FLAVOR

# Cleaning up
rm -rf $OSCDIR
rm -rf $SRC

echo "

Congratulations. You have now a working contrib kernel in 
$OBS_PRJ/kernel-$KERNEL_FLAVOR!

Have a lot of fun."
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