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c7e05719c5
This patch depends on kernel build infrastructure mentioned in http://codereview.chromium.org/543194/show Signed-off-by: Tim Gardner <tim.gardner@canonical.com> Review URL: http://codereview.chromium.org/553075
115 lines
4.0 KiB
Bash
Executable File
115 lines
4.0 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_DIR="$SRC_ROOT/third_party/kernel"
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KERNEL_FDIR="$KERNEL_DIR/files"
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DEFAULT_KFLAVOUR="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 flavour "${DEFAULT_KFLAVOUR}" \
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"The kernel flavour to build."
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DEFINE_string output_root "${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: $0 [flags]"
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# Parse command line
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FLAGS "$@" || exit 1
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eval set -- "${FLAGS_ARGV}"
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# Die on any errors.
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set -e
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# TODO: We detect the ARCH below. We can sed the FLAGS_output_root to replace
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# an ARCH placeholder with the proper architecture rather than assuming x86.
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mkdir -p "$FLAGS_output_root"
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# 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-${FLAGS_flavour}"
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rm -rf "$SRCDIR"
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mkdir -p "$SRCDIR"
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cp -a "${KERNEL_FDIR}"/* "$SRCDIR"
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cd "$SRCDIR"
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#
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# Build the config file
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#
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fakeroot debian/rules clean prepare-$FLAGS_flavour
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# Parse kernel config file for target architecture information. This is needed
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# to setup the environment for kernel build scripts which use "uname -m" to autodetect architecture.
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KCONFIG="$SRCDIR/debian/build/build-$FLAGS_flavour/.config"
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if [ ! -f "$KCONFIG" ]; then
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echo Total bummer. No config file was created.
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exit 1
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fi
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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=$(dpkg-parsechangelog -l$SRCDIR/debian.chrome/changelog|grep "Version:"|sed 's/^Version: //')
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# linux-image-2.6.31-0-chromeos-intel-menlow_2.6.31-0.1_i386.deb
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# FULLVERSION has the form "2.6.3x-ABI-MINOR" where x is {1,2}, ABI and MINOR are an integers.
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#In this example MAJOR is 2.6.31, ABI is 0, MINOR is 1
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MAJOR=$(echo $FULLVERSION | sed -e 's/\(^.*\)-.*$/\1/')
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ABI=$(echo $FULLVERSION | sed 's/^.*-\(.*\)\..*$/\1/')
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MINOR=$(echo $FULLVERSION | sed -e 's/^.*\.\([0-9]*$\)/\1/')
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PACKAGE="linux-image-${MAJOR}-${ABI}-${FLAGS_flavour}_${MAJOR}-${ABI}.${MINOR}_${ARCH}.deb"
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echo MAJOR $MAJOR
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echo ABI $ABI
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echo MINOR $MINOR
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echo PACKAGE $PACKAGE
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# Remove stale packages. debian/rules will dump the package in the parent
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# directory. From there, it will be moved to the output directory.
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rm -f "../${PACKAGE}"
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rm -f "${FLAGS_output_root}"/linux-image-*.deb
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# Build the kernel package.
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fakeroot debian/rules binary-debs flavours=${FLAGS_flavour}
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# debian/rules 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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