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#!/bin/sh
# Copyright 2018 Patrick J. Volkerding, Sebeka, Minnesota, USA
# All rights reserved.
#
# Redistribution and use of this script, with or without modification, is
# permitted provided that the following conditions are met:
#
# 1. Redistributions of this script must retain the above copyright
# notice, this list of conditions and the following disclaimer.
#
# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
# WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
# MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
# EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
# PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
# OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
# WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
# OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
# ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
# To use this script, point it to a Linux kernel source tree and a .config
# file by setting the appropriate environment variables:
#
# KERNEL_SOURCE=/usr/src/linux KERNEL_CONFIG=./kernel-configs/config-generic-4.14.23 ./kernel-modules.SlackBuild
#
# By default, it will use the source and .config already in /usr/src/linux (if possible).
# KERNEL_NAME is optional, and we don't use it. Define it to "-name" if
# you'd like an extra string after "kernel" in the package name
# (i.e. "kernel-name-modules").
cd $(dirname $0) ; CWD=$(pwd)
KERNEL_NAME=${KERNEL_NAME:-}
KERNEL_SOURCE=${KERNEL_SOURCE:-/usr/src/linux}
KERNEL_CONFIG=${KERNEL_CONFIG:-/usr/src/linux/.config}
BUILD=${BUILD:-1}
if [ ! -r "${KERNEL_CONFIG}" ]; then
echo "Error: the KERNEL_CONFIG environment variable needs to be set to the"
echo ".config file to be used to build these modules. Example:"
echo "KERNEL_SOURCE=/usr/src/linux KERNEL_CONFIG=./kernel-configs/config-generic-4.14.23 ./kernel-modules.SlackBuild"
exit 1
fi
if [ ! -d "${KERNEL_SOURCE}" ]; then
echo "Error: kernel source directory ${KERNEL_SOURCE} does not exist."
exit 1
fi
# Get the kernel version from the kernel Makefile:
VERSION=$(grep "^VERSION = " ${KERNEL_SOURCE}/Makefile | rev | cut -f 1 -d ' ' | rev).$(grep "^PATCHLEVEL = " ${KERNEL_SOURCE}/Makefile | rev | cut -f 1 -d ' ' | rev).$(grep "^SUBLEVEL = " ${KERNEL_SOURCE}/Makefile | rev | cut -f 1 -d ' ' | rev)$(grep "^EXTRAVERSION = " ${KERNEL_SOURCE}/Makefile | rev | cut -f 1 -d ' ' | rev)
# Set LOCALVERSION to the value found inside the .config:
LOCALVERSION="$(cat ${KERNEL_SOURCE}/.config 2> /dev/null | grep CONFIG_LOCALVERSION= | cut -f 2 -d = | tr -d \")"
# If the variable PRINT_PACKAGE_NAME is set, then this script will report what
# the name of the created package would be, and then exit. This information
# could be useful to other scripts.
if [ ! -z "${PRINT_PACKAGE_NAME}" ]; then
# We will need to copy the config and run make oldconfig and make
# prepare in order to generate kernel/bounds.s, where we can find
# the true $PACKAGE_ARCH.
if [ ! "${KERNEL_CONFIG}" = "${KERNEL_SOURCE}/.config" ]; then
cp -a ${KERNEL_CONFIG} ${KERNEL_SOURCE}/.config
fi
cd ${KERNEL_SOURCE}
make oldconfig 1> /dev/null 2> /dev/null
make prepare 1> /dev/null 2> /dev/null
PACKAGE_ARCH=$(cat kernel/bounds.s | grep -w "\-march=.*" | tr " " "\n" | grep -w "\-march=.*" | cut -f 2 -d = | tr - _)
echo "kernel${KERNEL_NAME}-modules${LOCALVERSION}-$(echo ${VERSION} | tr - _)$(echo ${LOCALVERSION} | tr - _)-${PACKAGE_ARCH}-$BUILD.txz"
exit 0
fi
NUMJOBS=${NUMJOBS:-" -j7 "}
TMP=${TMP:-/tmp}
PKG=$TMP/package-kernel${KERNEL_NAME}-modules
rm -rf $PKG
mkdir -p $TMP $PKG
# Set the variable $KERNEL_CLEAN to anything to run "make clean" before the
# build. Default is to start compiling in the tree as we found it.
if [ ! -z "${KERNEL_CLEAN}" ]; then
( cd ${KERNEL_SOURCE}
echo "Cleaning kernel source (make clean)..."
make clean
)
fi
# Copy the .config into the kernel source directory (unless it's there already)
if [ ! "${KERNEL_CONFIG}" = "${KERNEL_SOURCE}/.config" ]; then
echo "Copying the .config file to the kernel source tree:"
cp -a --verbose ${KERNEL_CONFIG} ${KERNEL_SOURCE}/.config
fi
( cd ${KERNEL_SOURCE}
echo "Running make oldconfig..."
make oldconfig
echo "Building kernel modules..."
make $NUMJOBS modules || exit 1
echo "Installing kernel modules to $PKG..."
make INSTALL_MOD_PATH=$PKG modules_install || exit 1
# Fix build and source symlinks if they are pointing into /tmp:
( cd $PKG/lib/modules/${VERSION}${LOCALVERSION}
for symlink in build source ; do
target=$(readlink $symlink)
if echo $target | grep -q "^/tmp/package-kernel-source/" ; then
rm -f $symlink
ln -sf $(echo $target | sed "s|/tmp/package-kernel-source/|/|g") $symlink
fi
done
)
depmod -b $PKG -a ${VERSION}${LOCALVERSION}
) || exit 1
mkdir $PKG/install
cat $CWD/slack-desc/slack-desc.kernel-modules-template | sed "s/%PACKAGE_NAME%/kernel${KERNEL_NAME}-modules${LOCALVERSION}/g" > $PKG/install/slack-desc
# Fetch the kernel architecture from the source tree:
cd ${KERNEL_SOURCE}
PACKAGE_ARCH=$(cat kernel/bounds.s | grep -w "\-march=.*" | tr " " "\n" | grep -w "\-march=.*" | cut -f 2 -d = | tr - _)
# Make the package:
cd $PKG
/sbin/makepkg -l y -c n $TMP/kernel${KERNEL_NAME}-modules${LOCALVERSION}-$(echo ${VERSION} | tr - _)$(echo ${LOCALVERSION} | tr - _)-${PACKAGE_ARCH}-$BUILD.txz
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