159 lines
7.3 KiB
Bash
Executable File
159 lines
7.3 KiB
Bash
Executable File
#!/bin/sh
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# Copyright 2018, 2020 Patrick J. Volkerding, Sebeka, Minnesota, USA
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# All rights reserved.
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#
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# Redistribution and use of this script, with or without modification, is
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# permitted provided that the following conditions are met:
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#
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# 1. Redistributions of this script must retain the above copyright
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# notice, this list of conditions and the following disclaimer.
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#
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# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
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# WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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# MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
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# EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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# PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
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# OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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# WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
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# OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
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# ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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# To use this script, point it to a Linux kernel source tree and a .config
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# file by setting the appropriate environment variables:
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#
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# KERNEL_SOURCE=/usr/src/linux KERNEL_CONFIG=./kernel-configs/config-generic-4.14.23 ./kernel-generic.SlackBuild
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#
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# It can also build the huge (or any other) kernel:
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#
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# KERNEL_NAME=huge KERNEL_SOURCE=/usr/src/linux KERNEL_CONFIG=./kernel-configs/config-huge-4.14.23 ./kernel-generic.SlackBuild
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#
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# By default, it will call the package "kernel-generic" and use the source and
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# .config already in /usr/src/linux (if possible).
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cd $(dirname $0) ; CWD=$(pwd)
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KERNEL_NAME=${KERNEL_NAME:-generic}
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KERNEL_SOURCE=${KERNEL_SOURCE:-../source}
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KERNEL_CONFIG=${KERNEL_CONFIG:-../source/.config}
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CONFIG_SUFFIX=${CONFIG_SUFFIX:-}
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BUILD=${BUILD:-1}
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if [ ! -r "${KERNEL_CONFIG}" ]; then
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echo "Error: the KERNEL_CONFIG environment variable needs to be set to the"
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echo ".config file to be used to build this kernel. Example:"
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echo "KERNEL_NAME=generic KERNEL_SOURCE=/usr/src/linux KERNEL_CONFIG=./kernel-configs/config-generic-4.14.23 ./kernel-generic.SlackBuild"
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exit 1
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fi
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if [ ! -d "${KERNEL_SOURCE}" ]; then
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echo "Error: kernel source directory ${KERNEL_SOURCE} does not exist."
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exit 1
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fi
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# Get the kernel version from the kernel Makefile:
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VERSION=$(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 = " ${KERNEL_SOURCE}/Makefile | rev | cut -f 1 -d ' ' | rev)
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# Set LOCALVERSION to the value found inside the .config:
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LOCALVERSION="$(cat ${KERNEL_SOURCE}/.config 2> /dev/null | grep CONFIG_LOCALVERSION= | cut -f 2 -d = | tr -d \")"
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# The default kernel arch is x86 for all 32-bit and 64-bit x86:
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if [ -z "${KERNEL_ARCH}" ]; then
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case "$(uname -m)" in
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i?86) KERNEL_ARCH=x86 ;;
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x86_64) KERNEL_ARCH=x86 ;;
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# Use uname -m for all other archs:
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*) KERNEL_ARCH=$(uname -m) ;;
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esac
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fi
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# If this variable is set to an output directory, we will also put copies of
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# System.map.gz, bzImage, and config in there:
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KERNEL_OUTPUT_DIRECTORY=${KERNEL_OUTPUT_DIRECTORY:-}
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# If the variable PRINT_PACKAGE_NAME is set, then this script will report what
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# the name of the created package would be, and then exit. This information
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# could be useful to other scripts.
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if [ ! -z "${PRINT_PACKAGE_NAME}" ]; then
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# We will need to copy the config and run make oldconfig and make
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# prepare in order to generate kernel/bounds.s, where we can find
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# the true $PACKAGE_ARCH.
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if [ ! "${KERNEL_CONFIG}" = "${KERNEL_SOURCE}/.config" ]; then
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cp -a ${KERNEL_CONFIG} ${KERNEL_SOURCE}/.config
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fi
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cd ${KERNEL_SOURCE}
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make oldconfig 1> /dev/null 2> /dev/null
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make prepare 1> /dev/null 2> /dev/null
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PACKAGE_ARCH=$(cat kernel/bounds.s | grep -w "\-march=.*" | tr " " "\n" | grep -w "\-march=.*" | cut -f 2 -d = | tr - _)
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echo "kernel-${KERNEL_NAME}${LOCALVERSION}-$(echo ${VERSION} | tr - _)$(echo ${LOCALVERSION} | tr - _)-${PACKAGE_ARCH}-$BUILD.txz"
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exit 0
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fi
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NUMJOBS=${NUMJOBS:-" -j$(expr $(nproc) + 1) "}
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TMP=${TMP:-/tmp}
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PKG=$TMP/package-kernel-${KERNEL_NAME}
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rm -rf $PKG
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mkdir -p $TMP $PKG
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# Set the variable $KERNEL_CLEAN to anything to run "make clean" before the
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# build. Default is to start compiling in the tree as we found it.
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if [ ! -z "${KERNEL_CLEAN}" ]; then
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( cd ${KERNEL_SOURCE}
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echo "Cleaning kernel source (make clean)..."
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make clean
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# Make sure header files aren't missing...
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make prepare
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# Don't package the kernel in the sources:
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find . -name "*Image" -exec rm "{}" \+
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# No need for these:
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rm -f .config.old .version
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find . -name "*.cmd" -exec rm -f "{}" \+
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rm .*.d
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)
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fi
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# Copy the .config into the kernel source directory (unless it's there already)
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if [ ! "${KERNEL_CONFIG}" = "${KERNEL_SOURCE}/.config" ]; then
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echo "Copying the .config file to the kernel source tree:"
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cp -a --verbose ${KERNEL_CONFIG} ${KERNEL_SOURCE}/.config
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fi
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( cd ${KERNEL_SOURCE}
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echo "Running make oldconfig..."
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make oldconfig
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echo "Building kernel..."
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make $NUMJOBS bzImage || make bzImage || exit 1
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# Output files to a directory, if requested:
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if [ ! -z "${KERNEL_OUTPUT_DIRECTORY}" ]; then
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echo "Copying files to ${KERNEL_OUTPUT_DIRECTORY}..."
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mkdir -p ${KERNEL_OUTPUT_DIRECTORY}
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rm -f ${KERNEL_OUTPUT_DIRECTORY}/*
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cp -a --verbose System.map ${KERNEL_OUTPUT_DIRECTORY}
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cp -a --verbose .config ${KERNEL_OUTPUT_DIRECTORY}/config
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cp -a --verbose arch/${KERNEL_ARCH}/boot/bzImage ${KERNEL_OUTPUT_DIRECTORY}
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gzip -9 ${KERNEL_OUTPUT_DIRECTORY}/System.map
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fi
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echo "Preparing the package in $PKG..."
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mkdir -p $PKG/boot
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cp -a --verbose System.map $PKG/boot/System.map-${KERNEL_NAME}${LOCALVERSION}-${VERSION}${LOCALVERSION}
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cp -a --verbose .config $PKG/boot/config-${KERNEL_NAME}${LOCALVERSION}-${VERSION}${LOCALVERSION}${CONFIG_SUFFIX}
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cp -a --verbose arch/${KERNEL_ARCH}/boot/bzImage $PKG/boot/vmlinuz-${KERNEL_NAME}${LOCALVERSION}-${VERSION}${LOCALVERSION}
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# Make symlinks:
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ln -sf System.map-${KERNEL_NAME}${LOCALVERSION}-${VERSION}${LOCALVERSION} $PKG/boot/System.map
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ln -sf config-${KERNEL_NAME}${LOCALVERSION}-${VERSION}${LOCALVERSION}${CONFIG_SUFFIX} $PKG/boot/config
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ln -sf vmlinuz-${KERNEL_NAME}${LOCALVERSION}-${VERSION}${LOCALVERSION} $PKG/boot/vmlinuz
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ln -sf vmlinuz-${KERNEL_NAME}${LOCALVERSION}-${VERSION}${LOCALVERSION} $PKG/boot/vmlinuz-${KERNEL_NAME}${LOCALVERSION}
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) || exit 1
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# Fetch the kernel architecture from the source tree:
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cd ${KERNEL_SOURCE}
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PACKAGE_ARCH=$(cat kernel/bounds.s | grep -w "\-march=.*" | tr " " "\n" | grep -w "\-march=.*" | cut -f 2 -d = | tr - _)
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mkdir $PKG/install
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if [ -r $CWD/slack-desc/slack-desc.kernel-${KERNEL_NAME}${LOCALVERSION}.${PACKAGE_ARCH} ]; then
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cat $CWD/slack-desc/slack-desc.kernel-${KERNEL_NAME}${LOCALVERSION}.${PACKAGE_ARCH} > $PKG/install/slack-desc
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else
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cat $CWD/slack-desc/slack-desc.kernel-template | sed "s/%PACKAGE_NAME%/kernel-${KERNEL_NAME}${LOCALVERSION}/g" > $PKG/install/slack-desc
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fi
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# Make the package:
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cd $PKG
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/sbin/makepkg -l y -c n $TMP/kernel-${KERNEL_NAME}${LOCALVERSION}-$(echo ${VERSION} | tr - _)$(echo ${LOCALVERSION} | tr - _)-${PACKAGE_ARCH}-$BUILD.txz
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