allow using alternative rootfs image via rootfs= parameter

1 files changed, 4 insertions, 2 deletions

diff --git a/Makefile b/Makefile
index 5596f5d..b64cab9 100644
--- a/Makefile
+++ b/Makefile
@@ -70,10 +70,12 @@ rootfs:
         [ -e install-stamp ] || sudo make install-stamp
         $(MAKE) -C rootfs
         sudo mkdir -p /srv/nbd
-        sudo ln -sf "$$PWD"/rootfs/samizdat.btrfs /srv/nbd/samizdat.btrfs
+        sudo ln -sf "$$PWD"/rootfs/$(rootfs).btrfs /srv/nbd/samizdat.btrfs
+
+rootfs = samizdat
 
 define get_kernel_version
-egrep '^ii  linux-image-(amd64|686)' rootfs/_build/samizdat.pkgs.txt  | \
+egrep '^ii  linux-image-(amd64|686)' rootfs/_build/$(rootfs).pkgs.txt  | \
         (read _ pkg ver _; apt-cache show $$pkg=$$ver) | \
         grep Depends | \
         (read _ a; echo $${a#linux-image-})