237e23bb19
Add a script to update the local copy of kernel headers (in include/linux/) from a Linux kernel git tree. The script handles header installation, manual processing of the IPU3 header that is still in staging, and update of the README file. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
89 lines
2.2 KiB
Bash
Executable file
89 lines
2.2 KiB
Bash
Executable file
#!/bin/sh
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# SPDX-License-Identifier: GPL-2.0-or-later
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# Update the kernel headers copy from a kernel source tree
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if [ $# != 1 ] ; then
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echo "Usage: $0 <kernel dir>"
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exit 1
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fi
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header_dir="$(dirname "$(realpath "$0")")/../include/linux"
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kernel_dir="$1"
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# Bail out if the directory doesn't contain kernel sources
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line=$(head -3 "${kernel_dir}/Kbuild" 2>/dev/null | tail -1)
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if [ "$line" != "# Kbuild for top-level directory of the kernel" ] ; then
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echo "Directory ${kernel_dir} doesn't contain a kernel source tree"
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exit 1
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fi
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if [ ! -d "${kernel_dir}/.git" ] ; then
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echo "Directory ${kernel_dir} doesn't contain a git tree"
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exit 1
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fi
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# Check the kernel version, and reject dirty trees
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version=$(git -C "${kernel_dir}" describe --dirty)
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echo $version
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if echo "${version}" | grep -q dirty ; then
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echo "Kernel tree in ${kernel_dir} is dirty"
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exit 1
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fi
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# Install the headers to a temporary directory
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install_dir=$(mktemp -d)
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if [ ! -d "${install_dir}" ] ; then
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echo "Failed to create temporary directory"
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exit 1
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fi
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trap "rm -rf ${install_dir}" EXIT
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set -e
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make -C "${kernel_dir}" O="${install_dir}" headers_install
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set +e
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# Copy the headers
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headers="
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drm/drm_fourcc.h
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linux/dma-buf.h
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linux/dma-heap.h
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linux/media-bus-format.h
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linux/media.h
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linux/rkisp1-config.h
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linux/v4l2-common.h
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linux/v4l2-controls.h
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linux/v4l2-mediabus.h
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linux/v4l2-subdev.h
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linux/videodev2.h
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"
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for header in $headers ; do
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name=$(basename "${header}")
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cp "${install_dir}/usr/include/${header}" "${header_dir}/${name}"
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done
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# The IPU3 header is a special case, as it's stored in staging. Handle it
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# manually.
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(cd "${install_dir}" ; "${kernel_dir}scripts/headers_install.sh" \
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"${kernel_dir}/drivers/staging/media/ipu3/include/intel-ipu3.h" \
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"${header_dir}/intel-ipu3.h")
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# Update the README file
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cat <<EOF > "${header_dir}/README"
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# SPDX-License-Identifier: CC0-1.0
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Files in this directory are imported from ${version} of the Linux kernel. Do not
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modify them manually.
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EOF
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# Cleanup
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rm -rf "${install_dir}"
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cat <<EOF
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----------------------------------------------------------------------
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Kernel headers updated. Please review and up-port local changes before
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committing.
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----------------------------------------------------------------------
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EOF
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