[OE-core] [PATCH] image.bbclass: Set ROOTFS_RO_UNNEEDED correctly

[David Vincent]

Use a weak assignment for ROOTFS_RO_UNNEEDED to let users define their
own list overriding defaults.

Signed-off-by: David Vincent <freesilicon at gmail.com>
---
 meta/classes/image.bbclass | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/meta/classes/image.bbclass b/meta/classes/image.bbclass
index 405fd73c04..58cd608d14 100644
--- a/meta/classes/image.bbclass
+++ b/meta/classes/image.bbclass
@@ -33,7 +33,7 @@ ROOTFS_BOOTSTRAP_INSTALL = "run-postinsts"
 
 # These packages will be removed from a read-only rootfs after all other
 # packages have been installed
-ROOTFS_RO_UNNEEDED = "update-rc.d base-passwd shadow ${VIRTUAL-RUNTIME_update-alternatives} ${ROOTFS_BOOTSTRAP_INSTALL}"
+ROOTFS_RO_UNNEEDED ??= "update-rc.d base-passwd shadow ${VIRTUAL-RUNTIME_update-alternatives} ${ROOTFS_BOOTSTRAP_INSTALL}"
 
 # packages to install from features
 FEATURE_INSTALL = "${@' '.join(oe.packagegroup.required_packages(oe.data.typed_value('IMAGE_FEATURES', d), d))}"
-- 
2.12.2