dragora/stages/0/02-linux-headers

# Build script for linux-libre (headers).
#
# Copyright (c) 2014-2022 Matias Fonzo, <selk@dragora.org>.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#    http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

version=5.16.20

cd -- "$TMPDIR"
rm -rf linux-${version}
unpack "${worktree}/sources/linux-libre-${version}-gnu.tar.lz"

# Build instructions
cd linux-${version}

patch -p1 < "${worktree}/patches/linux-headers/revert-broken-uapi.patch"
patch -p1 < "${worktree}/patches/linux-headers/0003-remove-inclusion-of-sysinfo.h-in-kernel.h.patch"

make -j1 mrproper
make -j1 headers ARCH="$kernel_arch"
mkdir -p -- "${crossdir}/${target}/include"
cp -Rp usr/include/* "${crossdir}/${target}/include/"

# Remove cruft
find "${crossdir}/${target}/include" -name '.*' -exec rm -rf {} +
rm -f "${crossdir}/${target}/include/Makefile"

cleanup()
{
    cd -- "$TMPDIR" && rm -rf linux-${version}
}