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#!/bin/sh
#
# builddeb 1.2
# Copyright 2003 Wichert Akkerman <wichert@wiggy.net>
#
# Simple script to generate a deb package for a Linux kernel. All the
# complexity of what to do with a kernel after it is installer or removed
# is left to other scripts and packages: they can install scripts in the
# /etc/kernel/{pre,post}{inst,rm}.d/ directories that will be called on
# package install and removal.

set -e

# Some variables and settings used throughout the script
version=$KERNELRELEASE
tmpdir="$objtree/debian/tmp"

# Setup the directory structure
rm -rf "$tmpdir"
mkdir -p "$tmpdir/DEBIAN" "$tmpdir/lib" "$tmpdir/boot"

# Build and install the kernel
cp System.map "$tmpdir/boot/System.map-$version"
cp .config "$tmpdir/boot/config-$version"
cp $KBUILD_IMAGE "$tmpdir/boot/vmlinuz-$version"

if grep -q '^CONFIG_MODULES=y' .config ; then
	INSTALL_MOD_PATH="$tmpdir" make modules_install
fi

# Install the maintainer scripts
for script in postinst postrm preinst prerm ; do
	mkdir -p "$tmpdir/etc/kernel/$script.d"
	cat <<EOF > "$tmpdir/DEBIAN/$script"
#!/bin/sh

set -e

test -d /etc/kernel/$script.d && run-parts --arg="$version" /etc/kernel/$script.d
exit 0
EOF
	chmod 755 "$tmpdir/DEBIAN/$script"
done

name="Kernel Compiler <$(id -nu)@$(hostname -f)>"
# Generate a simple changelog template
cat <<EOF > debian/changelog
linux ($version) unstable; urgency=low

  * A standard release

 -- $name  $(date -R)
EOF

# Generate a control file
cat <<EOF > debian/control
Source: linux
Section: base
Priority: optional
Maintainer: $name
Standards-Version: 3.6.1

Package: linux-$version
Architecture: any
Description: Linux kernel, version $version
 This package contains the Linux kernel, modules and corresponding other
 files version $version.
EOF

# Fix some ownership and permissions
chown -R root:root "$tmpdir"
chmod -R go-w "$tmpdir"

# Perform the final magic
dpkg-gencontrol -isp
dpkg --build "$tmpdir" ..

exit 0

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