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#!/bin/bash
cd "$(dirname "$(readlink -f "${BASH_SOURCE[0]}")")"
K="$1"
if [[ ! -e $K/net/Kconfig ]]; then
echo "You must specify the location of kernel sources as the first argument." >&2
exit 1
fi
[[ $(< "$K/net/Makefile") == *wireguard* ]] || sed -i "/^obj-\\\$(CONFIG_NETFILTER).*+=/a obj-\$(CONFIG_WIREGUARD) += wireguard/" "$K/net/Makefile"
[[ $(< "$K/net/Kconfig") == *wireguard* ]] || sed -i "/^if INET\$/a source \"net/wireguard/Kconfig\"" "$K/net/Kconfig"
[[ $(< "$K/.gitignore") == *wireguard* ]] || echo "net/wireguard/" >> "$K/.gitignore"
cp fetch.sh "$K/scripts/fetch-latest-wireguard.sh"
chmod +x "$K/scripts/fetch-latest-wireguard.sh"
[[ $(< "$K/scripts/Kbuild.include") == *fetch-latest-wireguard.sh* ]] || echo '$(shell cd "$(srctree)" && ./scripts/fetch-latest-wireguard.sh)' >> "$K/scripts/Kbuild.include"
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