image.bbclass: Allow partial backwards compatibility

git-svn-id: https://svn.o-hand.com/repos/poky/trunk@2646 311d38ba-8fff-0310-9ca6-ca027cbcb966

diff --git a/meta/classes/image.bbclass b/meta/classes/image.bbclass
index 40402921cfa1dc3230ba94ea21f664d1c4000ff8..04e26e4b35da2ac6d1d1db527c0cf2fb17500587 100644 (file)
--- a/meta/classes/image.bbclass
+++ b/meta/classes/image.bbclass
@@ -2,10 +2,10 @@ inherit rootfs_${IMAGE_PKGTYPE}
 
 LICENSE = "MIT"
 PACKAGES = ""
-RDEPENDS = "${IMAGE_INSTALL}"
+RDEPENDS += "${IMAGE_INSTALL}"
 
-export IMAGE_BASENAME = "${PN}"
-export PACKAGE_INSTALL = "${IMAGE_INSTALL}"
+export IMAGE_BASENAME ?= "${PN}"
+export PACKAGE_INSTALL ?= "${IMAGE_INSTALL}"
 
 # We need to recursively follow RDEPENDS and RRECOMMENDS for images
 do_rootfs[recrdeptask] += "do_deploy do_populate_staging"