mirror of
https://github.com/flatcar/scripts.git
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84 lines
2.2 KiB
Bash
Executable File
84 lines
2.2 KiB
Bash
Executable File
#!/bin/bash
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# Copyright (c) 2015 The CoreOS 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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SCRIPT_ROOT=$(dirname "$(readlink -f "$0")")
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. "${SCRIPT_ROOT}/common.sh" || exit 1
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# Script must run inside the chroot
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restart_in_chroot_if_needed "$@"
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assert_not_root_user
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# Flags
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DEFINE_string board "${DEFAULT_BOARD}" \
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"Board to use for kernel source and architecture."
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DEFINE_string overlay "coreos" \
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"Portage repo containing the kernel ebuild."
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DEFINE_string package "sys-kernel/coreos-kernel" \
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"Portage ebuild name for the kernel."
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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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switch_to_strict_mode
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if [[ -z "${FLAGS_board}" ]] ; then
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die_notrace "--board is required."
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fi
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. "${BUILD_LIBRARY_DIR}/toolchain_util.sh"
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. "${BUILD_LIBRARY_DIR}/board_options.sh"
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KERNEL_ARCH=$(get_kernel_arch "${CHOST}")
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KERNEL_CLFAGS="-nopie -fstack-check=no"
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KERNEL_SRC="${BOARD_ROOT}/usr/src/linux"
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if [[ ! -f "${KERNEL_SRC}/Makefile" ]]; then
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die_notrace "No kernel source found at ${KERNEL_SRC}"
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fi
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KERNEL_BUILD=$(mktemp -d)
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trap "rm -rf '${KERNEL_BUILD}'" EXIT
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# Set up a ccache friendly build tree
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mkdir -p "${KERNEL_BUILD}/build"
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ln -s "${KERNEL_SRC}"/* "${KERNEL_BUILD}"
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if [[ -d /usr/lib/ccache/bin ]]; then
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export PATH="/usr/lib/ccache/bin:${PATH}"
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export CCACHE_BASEDIR="${KERNEL_BUILD}"
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fi
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kmake() {
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make -C "${KERNEL_BUILD}" \
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ARCH="${KERNEL_ARCH}" \
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CROSS_COMPILE="${CHOST}-" \
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KBUILD_OUTPUT="build" \
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KCFLAGS="${KERNEL_CFLAGS}" \
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LDFLAGS="" \
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"$@"
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}
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kmake_var() {
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echo -e "e:\\n\\t@echo \$(${1})\\ninclude Makefile" | kmake -s -f -
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}
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KERNEL_MAJOR=$(kmake_var VERSION)
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KERNEL_MINOR=$(kmake_var PATCHLEVEL)
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OVERLAY=$(portageq get_repo_path / "${FLAGS_overlay}")
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FILESDIR="${OVERLAY}/${FLAGS_package}/files"
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DEFCONFIG_NAME="${ARCH}_defconfig-${KERNEL_MAJOR}.${KERNEL_MINOR}"
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DEFCONFIG_PATH="${FILESDIR}/${DEFCONFIG_NAME}"
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cp "${DEFCONFIG_PATH}" "${KERNEL_BUILD}/build/.config"
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kmake olddefconfig
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kmake menuconfig
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kmake savedefconfig
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cp "${KERNEL_BUILD}/build/defconfig" "${DEFCONFIG_PATH}"
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git -C "${OVERLAY}" --no-pager diff "${FLAGS_package}"
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