ZFS kernel module build script (assumes /usr/src/linux for kernel path), useful for patching a kernel with ZFS code

zfs-build.sh

#!/bin/bash

current=`pwd`
#branch='0.6.5.8'
#zfs_commit='cb2e3360380ad465c2e5685941ae125b5cff463a' # OpenZFS 2.1.0-rc5
#zfs_commit='6150fbe67f7a9485eaabbca7df9a66852cda6892' # OpenZFS 2.0.4

function prep_and_clean() {
cd /usr/src/linux && make prepare
rm -Rf ${current}/spl ${current}/zfs
}

function build_spl() {
if [ ! -d "${current}/spl" ]; then
  cd ${current} && git clone https://github.com/zfsonlinux/spl.git
fi

cd ${current}/spl
if [ ! "${spl_commit}" == "" ]; then
  git checkout ${spl_commit}
elif [ ! "${branch}" == "" ]; then
  git checkout spl-${branch}
else
  git checkout master
fi
git pull
make distclean
./autogen.sh
./configure     --prefix=/ \
                --libdir=/lib64 \
                --includedir=/usr/include \
                --datarootdir=/usr/share \
                --enable-linux-builtin=yes \
                --with-linux=/usr/src/linux \
                --with-linux-obj=/usr/src/linux

./copy-builtin /usr/src/linux
}

function build_zfs() {
if [ ! -d "$current/zfs" ]; then
  cd $current && git clone https://github.com/zfsonlinux/zfs.git
fi

cd ${current}/zfs
if [ ! "${zfs_commit}" == "" ]; then
  git checkout ${zfs_commit}
elif [ ! "${branch}" == "" ]; then
  git checkout zfs-${branch}
else
  git checkout master
fi
git pull
make distclean
./autogen.sh
./configure     --prefix=/ \
                --libdir=/lib64 \
                --includedir=/usr/include \
                --datarootdir=/usr/share \
                --enable-linux-builtin=yes \
                --with-linux=/usr/src/linux \
                --with-linux-obj=/usr/src/linux \
                --with-spl="../spl" \
                --with-spl-obj="../spl"
                
./copy-builtin /usr/src/linux
}

prep_and_clean
#build_spl
build_zfs