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The change for adding the patches to the kernel git tree: http://chromereview.prom.corp.google.com/1180039 Review URL: http://chromereview.prom.corp.google.com/1181025 git-svn-id: svn://chrome-svn/chromeos/trunk@152 06c00378-0e64-4dae-be16-12b19f9950a1
177 lines
6.7 KiB
Bash
Executable File
177 lines
6.7 KiB
Bash
Executable File
#! /bin/sh
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# Copyright (c) 2009 The Chromium OS Authors. All rights reserved.
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# Use of this source code is governed by a BSD-style license that can be
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# found in the LICENSE file.
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# This script contains the set of commands to build a kernel package.
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#
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# If successful, a new linux-image-*.deb file will appear in the specified
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# output directory.
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#
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# The user-provided kernel config file is parsed to obtain information about
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# the desired kernel version and target platform. Here are the requirements:
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# 1) Kernel version string in the header, e.g. "Linux kernel version: 2.6.30"
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# 2) Target architecture variables set up, e.g. CONFIG_X86, CONFIG_ARM, etc.
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# 3) LOCALVERSION set to describe target platform (e.g. intel-menlow). This is
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# used for package naming.
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SRC_ROOT=$(dirname $(readlink -f $(dirname "$0")))
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. "${SRC_ROOT}/third_party/shflags/files/src/shflags"
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KERNEL_VERSION=${KERNEL_VERSION:-"2.6.30-chromeos-intel-menlow"}
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# Flags
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DEFAULT_BUILD_ROOT=${BUILD_ROOT:-"${SRC_ROOT}/build"}
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DEFINE_string config "config.${KERNEL_VERSION}" \
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"The kernel configuration file to use. See src/platform/kernel/config/*"
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DEFINE_integer revision 002 \
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"The package revision to use"
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DEFINE_string output_root "${DEFAULT_BUILD_ROOT}/x86/local_packages" \
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"Directory in which to place the resulting .deb package"
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DEFINE_string build_root "$DEFAULT_BUILD_ROOT" \
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"Root of build output"
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FLAGS_HELP="Usage: $0 [flags] <deb_patch1> <deb_patch2> ..."
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# Parse command line
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FLAGS "$@" || exit 1
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eval set -- "${FLAGS_ARGV}"
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# Die on any errors.
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set -e
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KERNEL_DIR="$SRC_ROOT/third_party/kernel"
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KCONFIG="${KERNEL_DIR}/config/${FLAGS_config}"
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# TODO: We detect the ARCH below. We can sed the FLAGS_output_root to replace
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# an ARCH placeholder with the proper architecture rather than assuming x86.
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mkdir -p "$FLAGS_output_root"
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# Use remaining arguments passed into the script as patch names. These are
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# for non-chromeos debian-style patches. The chromeos patches will be applied
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# manually below.
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PATCHES="$*"
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# Get kernel package configuration from repo.
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# TODO: Find a workaround for needing sudo for this. Maybe create a symlink
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# to /tmp/kernel-pkg.conf when setting up the chroot env?
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sudo cp "$KERNEL_DIR"/package/kernel-pkg.conf /etc/kernel-pkg.conf
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# Parse kernel config file for target architecture information. This is needed
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# to determine the full package name and also to setup the environment for
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# kernel build scripts which use "uname -m" to autodetect architecture.
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if [ -n $(grep 'CONFIG_X86=y' "$KCONFIG") ]
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then
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ARCH="i386"
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elif [ -n $(grep 'CONFIG_X86_64=y' "$KCONFIG") ]
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then
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ARCH="x86_64"
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elif [ -n $(grep 'CONFIG_ARM=y' "$KCONFIG") ]
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then
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ARCH="arm"
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else
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exit 1
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fi
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# Parse the config file for a line with "version" in it (in the header)
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# and remove any leading text before the major number of the kernel version
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FULLVERSION=$(sed -e '/version/ !d' -e 's/^[^0-9]*//' $KCONFIG)
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# FULLVERSION should have the form "2.6.30-rc1-chromeos-asus-eeepc". In this
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# example MAJOR is 2, MINOR is 6, EXTRA is 30, RELEASE is rc1, LOCAL is
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# asus-eeepc. RC is optional since it only shows up for release candidates.
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MAJOR=$(echo $FULLVERSION | sed -e 's/[^0-9].*//')
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MINOR=$(echo $FULLVERSION | sed -e 's/[0-9].//' -e 's/[^0-9].*//')
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EXTRA=$(echo $FULLVERSION | sed -e 's/[0-9].//' -e 's/[0-9].//' -e 's/[^0-9].*//')
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VER_MME="${MAJOR}.${MINOR}.${EXTRA}"
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LOCAL=$(sed -e '/CONFIG_LOCALVERSION=/ !d' -e 's/.*="-//' -e 's/"//' $KCONFIG)
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RC=$(echo $FULLVERSION | sed -r \
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"s/${VER_MME}-([^-]*)-*${LOCAL}/\1/")
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# The tag will be appended by make-kpkg to the extra version and will show up
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# in both the kernel and package names.
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CHROMEOS_TAG="chromeos"
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PACKAGE="linux-image-${VER_MME}-${CHROMEOS_TAG}-${LOCAL}_${FLAGS_revision}_${ARCH}.deb"
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# Set up kernel source tree and prepare to start the compilation.
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# TODO: Decide on proper working directory when building kernels. It should
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# be somewhere under ${BUILD_ROOT}.
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SRCDIR="${FLAGS_build_root}/kernels/kernel-${ARCH}-${LOCAL}"
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rm -rf "$SRCDIR"
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mkdir -p "$SRCDIR"
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cd "$SRCDIR"
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# Get kernel sources and patches.
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if [ -d ${KERNEL_DIR}/linux-${VER_MME} ]; then
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# TODO(msb): uncomment once git is available in the chroot
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# git clone "${KERNEL_DIR}"/linux_${VER_MME}
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cp -a "${KERNEL_DIR}"/linux-${VER_MME} .
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else
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# old way...
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# TODO: find a better source for the kernel source. Old versions of karmic
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# aren't hosted on archive.ubuntu.com
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#apt-get source linux-source-$MAJOR.$MINOR.$EXTRA
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# Name directory to what the patches expect
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mkdir linux-${VER_MME}
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cp -a "${KERNEL_DIR}"/files/* linux-${VER_MME}
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if [ ! -z $PATCHES ]
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then
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# TODO: Get rid of sudo if possible. Maybe the non-chromeos kernel
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# patches will be infrequent enough that we can make them part of
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# the chroot env?
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sudo apt-get install $PATCHES
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fi
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# TODO: Remove a config option which references a non-existent directory in
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# ubuntu kernel sources.
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sed -i '/gfs/ d' linux-$VER_MME/ubuntu/Makefile
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fi
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# Move kernel config to kernel source tree and rename to .config so that
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# it can be used for "make oldconfig" by make-kpkg.
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cp "$KCONFIG" "linux-${VER_MME}/.config"
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cd "linux-$VER_MME"
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# Remove stale packages. make-kpkg will dump the package in the parent
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# directory. From there, it will be moved to the output directory.
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rm -f "../${PACKAGE}"
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rm -f "${FLAGS_output_root}/${PACKAGE}"
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# Speed up compilation by running parallel jobs.
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if [ ! -e "/proc/cpuinfo" ]
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then
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# default to a reasonable level
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CONCURRENCY_LEVEL=2
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else
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# speed up compilation by running #cpus * 2 simultaneous jobs
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CONCURRENCY_LEVEL=$(($(cat /proc/cpuinfo | grep "processor" | wc -l) * 2))
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fi
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# The patch listing will be added into make-kpkg with --added-patches flag.
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# We need to change the formatting so they are a comma-separated values list
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# rather than whitespace separated.
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PATCHES_CSV=$(echo $PATCHES | sed -e 's/ \{1,\}/,/g' | sed -e 's/,$//')
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# Build the kernel and make package. "setarch" is used so that scripts which
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# detect architecture (like the "oldconfig" rule in kernel Makefile) don't get
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# confused when cross-compiling.
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make-kpkg clean
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MAKEFLAGS="CONCURRENCY_LEVEL=$CONCURRENCY_LEVEL" \
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setarch $ARCH make-kpkg \
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--append-to-version="-$CHROMEOS_TAG" --revision="$FLAGS_revision" \
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--arch="$ARCH" \
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--rootcmd fakeroot \
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--config oldconfig \
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--initrd --bzImage kernel_image \
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--added-patches "$PATCHES_CSV"
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# make-kpkg dumps the newly created package in the parent directory
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if [ -e "../${PACKAGE}" ]
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then
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mv "../${PACKAGE}" "${FLAGS_output_root}"
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echo "Kernel build successful, check ${FLAGS_output_root}/${PACKAGE}"
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else
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echo "Kernel build failed"
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exit 1
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fi
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