From 23d0b46966959d04e3d99010b22a24e36b73d6a7 Mon Sep 17 00:00:00 2001
From: =?utf8?q?Paul=20H=C3=A4nsch?= <paul@plutz.net>
Date: Thu, 25 Jul 2019 00:53:39 +0200
Subject: [PATCH] enable config selection, enable release switch

---
 Makefile          | 48 ++++++++++++++++++++++++++++-------------------
 config.example    |  3 +++
 modules/approx.mk | 16 +++++++---------
 3 files changed, 39 insertions(+), 28 deletions(-)

diff --git a/Makefile b/Makefile
index ef1af75..c3309a2 100644
--- a/Makefile
+++ b/Makefile
@@ -13,21 +13,29 @@ space_:= ${nul_} ${nul_}
 ARCH := amd64
 KEYRING := keys/debian-archive-stretch-stable.gpg
 BOOTSTRAP := http://cdn.debian.net/debian
+PACKAGES := ${PACKAGES} apt busybox-static debian-archive-keyring init systemd
 
 # Partition Table (2M) + Boot Partition (126M)+ Root Partition + Slack Space (1M) = 2048M
 BOOT_MB := 62
 ROOT_MB := 959
 
-define SOURCES = 
-deb	http://cdn.debian.net/debian stretch main
-endef
-
-PACKAGES := ${PACKAGES} apt busybox-static debian-archive-keyring init systemd
-
-include config.mk
 config.mk:
 	cp "config.example" "$@"
 
+ifndef config
+  include config.mk
+else
+  include ${config}
+endif
+
+ifndef release
+  release := stretch
+endif
+
+define SOURCES := 
+deb	http://cdn.debian.net/debian ${release} main
+endef
+
 ifdef disk
   VOLUME := ${disk}
   PBOOT := ${disk}1
@@ -51,7 +59,7 @@ else ifdef image
   VOLUME := ${image}
   PBOOT := part_boot.img
   PROOT := part_root.img
-  SYSROOT := sys_root/
+  SYSROOT := sys_root_${release}/
   CFGROOT := img_mount/
   
   _target: _mbr _umount _partcopy _config _install
@@ -71,7 +79,7 @@ else ifdef image
 
 else ifdef squash
   SQUASH := ${squash}
-  SYSROOT := sys_root/
+  SYSROOT := sys_root_${release}/
   CFGROOT := cfg_root/
 
   PACKAGES += squashfs-tools nbd-client
@@ -88,16 +96,16 @@ else ifdef raspi
   VOLUME := ${raspi}
   PBOOT := rpi_boot.img
   PROOT := rpi_root.img
-  SYSROOT := rpi_root/
+  SYSROOT := rpi_root_${release}/
   CFGROOT := img_mount/
   
   ARCH := armhf
   KEYRING := keys/raspbian-archive-keyring.gpg
   BOOTSTRAP := http://raspbian.raspberrypi.org/raspbian
 
-  define SOURCES =
-  deb	http://raspbian.raspberrypi.org/raspbian stretch main non-free firmware rpi
-  deb	http://archive.raspberrypi.org/debian stretch main
+  define SOURCES :=
+  deb	http://raspbian.raspberrypi.org/raspbian ${release} main non-free firmware rpi
+  deb	http://archive.raspberrypi.org/debian ${release} main
   endef
 
   PACKAGES += firmware-brcm80211 libraspberrypi-bin libraspberrypi0 pi-bluetooth raspberrypi-bootloader raspberrypi-kernel
@@ -136,16 +144,16 @@ endif
 
 export SOURCES SYSROOT CFGROOT VOLUME PBOOT PROOT SQUASH ARCH KEYRING BOOTSTRAP
 
-sys_root/:
+sys_root_${release}/:
 	btrfs subvol create "$@" || mkdir "$@"
 	chmod 755 "$@"
 
-cfg_root/: sys_root/ _install
+cfg_root/: sys_root_${release}/ _install
 	-btrfs sub del "$@" || rm -r "$@"
 	btrfs sub snap "$<" "$@" || mkdir "$@"
 	chmod 755 "$@"
 
-rpi_root/:
+rpi_root_${release}/:
 	btrfs subvol create "$@" || mkdir "$@"
 	chmod 755 "$@"
 
@@ -166,7 +174,9 @@ _bootstrap: ${SYSROOT}/bin/sh
 ${SYSROOT}/bin/sh: | ${SYSROOT}
 	debootstrap --variant=minbase --arch="$${ARCH}" \
 		--keyring="$${KEYRING}" \
-		stretch "$${SYSROOT}" "$${BOOTSTRAP}"
+		"${release}" "$${SYSROOT}" "$${BOOTSTRAP}"
+	printf 'APT::Default-Release "%s";' "${release}" >"$${SYSROOT}/etc/apt/apt.conf.d/10release"
+
 
 .PHONY: _aptkeys _norecommends
 _aptkeys: ${SYSROOT}/etc/apt/trusted.gpg.d/
@@ -327,9 +337,9 @@ clean:
 	-umount hdd_mount/boot
 	-umount hdd_mount
 	-rmdir hdd_mount
-	if [ -d "sys_root/" ]; then btrfs sub del "sys_root/" || echo rm -r "sys_root/"; fi
+	if [ -d "sys_root_${release}/" ]; then btrfs sub del "sys_root_${release}/" || echo rm -r "sys_root_${release}/"; fi
 	if [ -d "cfg_root/" ]; then btrfs sub del "cfg_root/" || echo rm -r "cfg_root/"; fi
-	if [ -d "rpi_root/" ]; then btrfs sub del "rpi_root/" || echo rm -r "rpi_root/"; fi
+	if [ -d "rpi_root_${release}/" ]; then btrfs sub del "rpi_root_${release}/" || echo rm -r "rpi_root_${release}/"; fi
 	-rm part_boot.img
 	-rm part_root.img
 	-rm rpi_boot.img
diff --git a/config.example b/config.example
index 07edc44..33064de 100644
--- a/config.example
+++ b/config.example
@@ -9,6 +9,9 @@
 ## Additional packages
 # packages=chromium,gimp
 
+## Debian release, so far only stretch has been tested
+# release=stretch
+
 ## Comma separated list of config modules from modules/ directory
 # modules=nodm,xfce
 
diff --git a/modules/approx.mk b/modules/approx.mk
index ca3f34a..8e4fd78 100644
--- a/modules/approx.mk
+++ b/modules/approx.mk
@@ -4,22 +4,20 @@ endef
 export approx_original_sources
 
 ifdef approx
-
-BOOTSTRAP := ${approx}
-define SOURCES =
-deb ${approx} stretch main
-endef
-
+  BOOTSTRAP := ${approx}
+  define SOURCES =
+  deb ${approx} ${release} main
+  endef
 else ifdef raspi
   BOOTSTRAP := http://localhost/raspbian
   define SOURCES :=
-  deb http://localhost/raspbian stretch main non-free firmware rpi
-  deb http://localhost/rpidebian stretch main
+  deb http://localhost/raspbian ${release} main non-free firmware rpi
+  deb http://localhost/rpidebian ${release} main
   endef
 else
   BOOTSTRAP := http://localhost/debian
   define SOURCES :=
-  deb http://localhost/debian stretch main
+  deb http://localhost/debian ${release} main
   endef
 endif
 
-- 
2.39.2