1 files changed, 273 insertions, 0 deletions
diff --git a/scripts/package/mkdebian b/scripts/package/mkdebian
new file mode 100755
index 000000000000..d4b007b38a47
--- /dev/null
+++ b/scripts/package/mkdebian
@@ -0,0 +1,273 @@
+#!/bin/sh
+#
+# Copyright 2003 Wichert Akkerman <wichert@wiggy.net>
+#
+# Simple script to generate a debian/ directory for a Linux kernel.
+
+set -eu
+
+is_enabled() {
+	grep -q "^$1=y" include/config/auto.conf
+}
+
+if_enabled_echo() {
+	if is_enabled "$1"; then
+		echo -n "$2"
+	elif [ $# -ge 3 ]; then
+		echo -n "$3"
+	fi
+}
+
+set_debarch() {
+	if [ "${KBUILD_DEBARCH:+set}" ]; then
+		debarch="$KBUILD_DEBARCH"
+		return
+	fi
+
+	# Attempt to find the correct Debian architecture
+	case "$UTS_MACHINE" in
+	i386|alpha|m68k|riscv*)
+		debarch="$UTS_MACHINE" ;;
+	x86_64)
+		debarch=amd64 ;;
+	sparc*)
+		debarch=sparc$(if_enabled_echo CONFIG_64BIT 64) ;;
+	s390*)
+		debarch=s390x ;;
+	ppc*)
+		if is_enabled CONFIG_64BIT; then
+			debarch=ppc64$(if_enabled_echo CONFIG_CPU_LITTLE_ENDIAN el)
+		else
+			debarch=powerpc$(if_enabled_echo CONFIG_SPE spe)
+		fi
+		;;
+	parisc*)
+		debarch=hppa ;;
+	mips*)
+		if is_enabled CONFIG_CPU_LITTLE_ENDIAN; then
+			debarch=mips$(if_enabled_echo CONFIG_64BIT 64)$(if_enabled_echo CONFIG_CPU_MIPSR6 r6)el
+		elif is_enabled CONFIG_CPU_MIPSR6; then
+			debarch=mips$(if_enabled_echo CONFIG_64BIT 64)r6
+		else
+			debarch=mips
+		fi
+		;;
+	aarch64|arm64)
+		debarch=arm64 ;;
+	arm*)
+		if is_enabled CONFIG_AEABI; then
+			debarch=arm$(if_enabled_echo CONFIG_VFP hf el)
+		else
+			debarch=arm
+		fi
+		;;
+	openrisc)
+		debarch=or1k ;;
+	sh)
+		if is_enabled CONFIG_CPU_SH3; then
+			debarch=sh3$(if_enabled_echo CONFIG_CPU_BIG_ENDIAN eb)
+		elif is_enabled CONFIG_CPU_SH4; then
+			debarch=sh4$(if_enabled_echo CONFIG_CPU_BIG_ENDIAN eb)
+		fi
+		;;
+	um)
+		if is_enabled CONFIG_64BIT; then
+			debarch=amd64
+		else
+			debarch=i386
+		fi
+		;;
+	loongarch64)
+		debarch=loong64 ;;
+	esac
+	if [ -z "$debarch" ]; then
+		debarch=$(dpkg-architecture -qDEB_HOST_ARCH)
+		echo "" >&2
+		echo "** ** **  WARNING  ** ** **" >&2
+		echo "" >&2
+		echo "Your architecture doesn't have its equivalent" >&2
+		echo "Debian userspace architecture defined!" >&2
+		echo "Falling back to the current host architecture ($debarch)." >&2
+		echo "Please add support for $UTS_MACHINE to ${0} ..." >&2
+		echo "" >&2
+	fi
+}
+
+# Create debian/source/ if it is a source package build
+gen_source ()
+{
+	mkdir -p debian/source
+
+	echo "3.0 (quilt)" > debian/source/format
+
+	{
+		echo "diff-ignore"
+		echo "extend-diff-ignore = .*"
+	} > debian/source/local-options
+
+	# Add .config as a patch
+	mkdir -p debian/patches
+	{
+		echo "Subject: Add .config"
+		echo "Author: ${maintainer}"
+		echo
+		echo "--- /dev/null"
+		echo "+++ linux/.config"
+		diff -u /dev/null "${KCONFIG_CONFIG}" | tail -n +3
+	} > debian/patches/config.patch
+	echo config.patch > debian/patches/series
+
+	"${srctree}/scripts/package/gen-diff-patch" debian/patches/diff.patch
+	if [ -s debian/patches/diff.patch ]; then
+		sed -i "
+			1iSubject: Add local diff
+			1iAuthor: ${maintainer}
+			1i
+		" debian/patches/diff.patch
+
+		echo diff.patch >> debian/patches/series
+	else
+		rm -f debian/patches/diff.patch
+	fi
+}
+
+rm -rf debian
+mkdir debian
+
+user=${KBUILD_BUILD_USER:-$(id -nu)}
+name=${DEBFULLNAME:-${user}}
+if [ "${DEBEMAIL:+set}" ]; then
+	email=${DEBEMAIL}
+else
+	buildhost=${KBUILD_BUILD_HOST:-$(hostname -f 2>/dev/null || hostname)}
+	email="${user}@${buildhost}"
+fi
+maintainer="${name} <${email}>"
+
+while [ $# -gt 0 ]; do
+	case "$1" in
+	--need-source)
+		gen_source
+		shift
+		;;
+	*)
+		break
+		;;
+	esac
+done
+
+# Some variables and settings used throughout the script
+if [ "${KDEB_PKGVERSION:+set}" ]; then
+	packageversion=$KDEB_PKGVERSION
+else
+	upstream_version=$("${srctree}/scripts/setlocalversion" --no-local "${srctree}" | sed 's/-\(rc[1-9]\)/~\1/')
+	debian_revision=$("${srctree}/scripts/build-version")
+	packageversion=${upstream_version}-${debian_revision}
+fi
+sourcename=${KDEB_SOURCENAME:-linux-upstream}
+
+if [ "$ARCH" = "um" ] ; then
+	packagename=user-mode-linux
+else
+	packagename=linux-image
+fi
+
+debarch=
+set_debarch
+
+# Try to determine distribution
+if [ "${KDEB_CHANGELOG_DIST:+set}" ]; then
+        distribution=$KDEB_CHANGELOG_DIST
+# In some cases lsb_release returns the codename as n/a, which breaks dpkg-parsechangelog
+elif distribution=$(lsb_release -cs 2>/dev/null) && [ -n "$distribution" ] && [ "$distribution" != "n/a" ]; then
+        : # nothing to do in this case
+else
+        distribution="unstable"
+        echo >&2 "Using default distribution of 'unstable' in the changelog"
+        echo >&2 "Install lsb-release or set \$KDEB_CHANGELOG_DIST explicitly"
+fi
+
+echo $debarch > debian/arch
+
+host_gnu=$(dpkg-architecture -a "${debarch}" -q DEB_HOST_GNU_TYPE | sed 's/_/-/g')
+
+# Generate a simple changelog template
+cat <<EOF > debian/changelog
+$sourcename ($packageversion) $distribution; urgency=low
+
+  * Custom built Linux kernel.
+
+ -- $maintainer  $(date -R)
+EOF
+
+# Generate a control file
+cat <<EOF > debian/control
+Source: $sourcename
+Section: kernel
+Priority: optional
+Maintainer: $maintainer
+Rules-Requires-Root: no
+Build-Depends: debhelper-compat (= 12)
+Build-Depends-Arch: bc, bison, flex,
+ gcc-${host_gnu} <!pkg.${sourcename}.nokernelheaders>,
+ kmod, libdw-dev:native, libelf-dev:native,
+ libssl-dev:native, libssl-dev <!pkg.${sourcename}.nokernelheaders>,
+ python3:native, rsync
+Homepage: https://www.kernel.org/
+
+Package: $packagename-${KERNELRELEASE}
+Architecture: $debarch
+Description: Linux kernel, version ${KERNELRELEASE}
+ This package contains the Linux kernel, modules and corresponding other
+ files, version: ${KERNELRELEASE}.
+EOF
+
+if [ "${SRCARCH}" != um ]; then
+cat <<EOF >> debian/control
+
+Package: linux-libc-dev
+Section: devel
+Provides: linux-kernel-headers
+Architecture: $debarch
+Description: Linux support headers for userspace development
+ This package provides userspaces headers from the Linux kernel.  These headers
+ are used by the installed headers for GNU glibc and other system libraries.
+Multi-Arch: same
+EOF
+
+if is_enabled CONFIG_MODULES; then
+cat <<EOF >> debian/control
+
+Package: linux-headers-${KERNELRELEASE}
+Architecture: $debarch
+Build-Profiles: <!pkg.${sourcename}.nokernelheaders>
+Description: Linux kernel headers for ${KERNELRELEASE} on $debarch
+ This package provides kernel header files for ${KERNELRELEASE} on $debarch
+ .
+ This is useful for people who need to build external modules
+EOF
+fi
+fi
+
+if is_enabled CONFIG_DEBUG_INFO; then
+cat <<EOF >> debian/control
+
+Package: linux-image-${KERNELRELEASE}-dbg
+Section: debug
+Architecture: $debarch
+Build-Profiles: <!pkg.${sourcename}.nokerneldbg>
+Description: Linux kernel debugging symbols for ${KERNELRELEASE}
+ This package will come in handy if you need to debug the kernel. It provides
+ all the necessary debug symbols for the kernel and its modules.
+EOF
+fi
+
+cat <<EOF > debian/rules.vars
+ARCH := ${ARCH}
+KERNELRELEASE := ${KERNELRELEASE}
+EOF
+
+cp "${srctree}/scripts/package/debian/copyright" debian/
+cp "${srctree}/scripts/package/debian/rules" debian/
+
+exit 0