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Date:   Mon, 13 Mar 2023 05:07:30 +0900
From:   Masahiro Yamada <masahiroy@...nel.org>
To:     linux-kbuild@...r.kernel.org
Cc:     Linus Torvalds <torvalds@...ux-foundation.org>,
        linux-kernel@...r.kernel.org,
        Masahiro Yamada <masahiroy@...nel.org>,
        Nathan Chancellor <nathan@...nel.org>,
        Nick Desaulniers <ndesaulniers@...gle.com>,
        Nicolas Schier <nicolas@...sle.eu>
Subject: [PATCH 5/6] kbuild: deb-pkg: use dh_listpackages to know enabled packages

Use dh_listpackages to get a list of all binary packages.

With this, debian/control lists which binary packages will be produced.
Previously, ARCH=um listed linux-libc-dev in debian/control, but it
was not generated because each of mkdebian and builddeb independently
maintained the if-conditionals.

Another motivation is to allow scripts/package/builddeb to get the
package name (linux-image-*, etc.) dynamically from debian/control.

This will also allow the BuildProfile to control the generation of
the binary packages.

Signed-off-by: Masahiro Yamada <masahiroy@...nel.org>
---

 scripts/package/builddeb | 61 ++++++++++++++++++++++------------------
 scripts/package/mkdebian |  7 ++++-
 2 files changed, 39 insertions(+), 29 deletions(-)

diff --git a/scripts/package/builddeb b/scripts/package/builddeb
index 906889b304a4..c5ae57167d7c 100755
--- a/scripts/package/builddeb
+++ b/scripts/package/builddeb
@@ -160,7 +160,7 @@ install_linux_image_dbg () {
 	ln -s lib/modules/${KERNELRELEASE}/vmlinux ${pdir}/usr/lib/debug/vmlinux-${KERNELRELEASE}
 }
 
-deploy_kernel_headers () {
+install_kernel_headers () {
 	pdir=$1
 
 	rm -rf $pdir
@@ -198,7 +198,7 @@ deploy_kernel_headers () {
 	ln -s /usr/src/linux-headers-$version $pdir/lib/modules/$version/build
 }
 
-deploy_libc_headers () {
+install_libc_headers () {
 	pdir=$1
 
 	rm -rf $pdir
@@ -213,33 +213,38 @@ deploy_libc_headers () {
 	mv $pdir/usr/include/asm $pdir/usr/include/$host_arch/
 }
 
-version=$KERNELRELEASE
-packagename=linux-image-$version
-dbg_packagename=$packagename-dbg
-
-if [ "$ARCH" = "um" ] ; then
-	packagename=user-mode-linux-$version
-fi
-
 rm -f debian/files
 
-if [ "$ARCH" != "um" ]; then
-	if is_enabled CONFIG_MODULES; then
-		deploy_kernel_headers debian/linux-headers
-		create_package linux-headers-$version debian/linux-headers
-	fi
-
-	deploy_libc_headers debian/linux-libc-dev
-	create_package linux-libc-dev debian/linux-libc-dev
-fi
-
-install_linux_image debian/linux-image "$packagename"
-
-if is_enabled CONFIG_DEBUG_INFO; then
-	install_linux_image_dbg debian/linux-image-dbg debian/linux-image
-	create_package "$dbg_packagename" debian/linux-image-dbg
-fi
-
-create_package "$packagename" debian/linux-image
+packages_enabled=$(dh_listpackages)
+
+for package in ${packages_enabled}
+do
+	case ${package} in
+	*-dbg)
+		# This must be done after linux-image, that is, we expect the
+		# debug package appears after linux-image in debian/control.
+		install_linux_image_dbg debian/linux-image-dbg debian/linux-image;;
+	linux-image-*|user-mode-linux-*)
+		install_linux_image debian/linux-image ${package};;
+	linux-libc-dev)
+		install_libc_headers debian/linux-libc-dev;;
+	linux-headers-*)
+		install_kernel_headers debian/linux-headers;;
+	esac
+done
+
+for package in ${packages_enabled}
+do
+	case ${package} in
+	*-dbg)
+		create_package ${package} debian/linux-image-dbg;;
+	linux-image-*|user-mode-linux-*)
+		create_package ${package} debian/linux-image;;
+	linux-libc-dev)
+		create_package ${package} debian/linux-libc-dev;;
+	linux-headers-*)
+		create_package ${package} debian/linux-headers;;
+	esac
+done
 
 exit 0
diff --git a/scripts/package/mkdebian b/scripts/package/mkdebian
index 31b050368cd0..e80a661a79ee 100755
--- a/scripts/package/mkdebian
+++ b/scripts/package/mkdebian
@@ -192,7 +192,7 @@ Section: kernel
 Priority: optional
 Maintainer: $maintainer
 Rules-Requires-Root: no
-Build-Depends: bc, rsync, kmod, cpio, bison, flex $extra_build_depends
+Build-Depends: bc, debhelper, rsync, kmod, cpio, bison, flex $extra_build_depends
 Homepage: https://www.kernel.org/
 
 Package: $packagename-$version
@@ -200,6 +200,10 @@ Architecture: $debarch
 Description: Linux kernel, version $version
  This package contains the Linux kernel, modules and corresponding other
  files, version: $version.
+EOF
+
+if [ "${SRCARCH}" != um ]; then
+cat <<EOF >> debian/control
 
 Package: linux-libc-dev
 Section: devel
@@ -222,6 +226,7 @@ Description: Linux kernel headers for $version 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
-- 
2.34.1

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