qemu/scripts/update-linux-headers.sh

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#!/bin/sh -e
#
# Update Linux kernel headers QEMU requires from a specified kernel tree.
#
# Copyright (C) 2011 Siemens AG
#
# Authors:
# Jan Kiszka <jan.kiszka@siemens.com>
#
# This work is licensed under the terms of the GNU GPL version 2.
# See the COPYING file in the top-level directory.
tmpdir=`mktemp -d`
linux="$1"
output="$2"
if [ -z "$linux" ] || ! [ -d "$linux" ]; then
cat << EOF
usage: update-kernel-headers.sh LINUX_PATH [OUTPUT_PATH]
LINUX_PATH Linux kernel directory to obtain the headers from
OUTPUT_PATH output directory, usually the qemu source tree (default: $PWD)
EOF
exit 1
fi
if [ -z "$output" ]; then
output="$PWD"
fi
# This will pick up non-directories too (eg "Kconfig") but we will
# ignore them in the next loop.
ARCHLIST=$(cd "$linux/arch" && echo *)
for arch in $ARCHLIST; do
# Discard anything which isn't a KVM-supporting architecture
if ! [ -e "$linux/arch/$arch/include/asm/kvm.h" ]; then
continue
fi
# Blacklist architectures which have KVM headers but are actually dead
if [ "$arch" = "ia64" ]; then
continue
fi
make -C "$linux" INSTALL_HDR_PATH="$tmpdir" SRCARCH=$arch headers_install
rm -rf "$output/linux-headers/asm-$arch"
mkdir -p "$output/linux-headers/asm-$arch"
for header in kvm.h kvm_para.h; do
cp "$tmpdir/include/asm/$header" "$output/linux-headers/asm-$arch"
done
if [ $arch = x86 ]; then
cp "$tmpdir/include/asm/hyperv.h" "$output/linux-headers/asm-x86"
fi
done
rm -rf "$output/linux-headers/linux"
mkdir -p "$output/linux-headers/linux"
for header in kvm.h kvm_para.h vhost.h virtio_config.h virtio_ring.h; do
cp "$tmpdir/include/linux/$header" "$output/linux-headers/linux"
done
rm -rf "$output/linux-headers/asm-generic"
mkdir -p "$output/linux-headers/asm-generic"
for header in kvm_para.h; do
cp "$tmpdir/include/asm-generic/$header" "$output/linux-headers/asm-generic"
done
if [ -L "$linux/source" ]; then
cp "$linux/source/COPYING" "$output/linux-headers"
else
cp "$linux/COPYING" "$output/linux-headers"
fi
rm -rf "$tmpdir"