image/core-image: Handle conflicting IMAGE_FEATURES.

IMAGE_FEATURES such as 'ssh-server-dropbear' and 'ssh-server-openssh'
can't be both enabled. User can use the following variables to define
the relationship of image features:

IMAGE_FEATURES_REPLACES_foo = "bar" means including image feature "foo"
would replace the image feature "bar".

IMAGE_FEATURES_CONFLICTS_foo = "bar" means including both image features
"foo" and "bar" would cause an parsing error.

(From OE-Core rev: e36d12a9c1cf69540079e48a1dfadbc343758e48)

Signed-off-by: Lianhao Lu <lianhao.lu@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 10 insertions, 1 deletions

diff --git a/meta/classes/core-image.bbclass b/meta/classes/core-image.bbclass
index 25f5c5a8dc..6b207d7cfa 100644
--- a/meta/classes/core-image.bbclass
+++ b/meta/classes/core-image.bbclass
@@ -47,6 +47,14 @@ PACKAGE_GROUP_ssh-server-openssh = "task-core-ssh-openssh"
 PACKAGE_GROUP_package-management = "${ROOTFS_PKGMANAGE}"
 PACKAGE_GROUP_qt4-pkgs = "task-core-qt-demos"
 
+
+# IMAGE_FEAETURES_REPLACES_foo = 'bar1 bar2'
+# Including image feature foo would replace the image features bar1 and bar2
+IMAGE_FEATURES_REPLACES_ssh-server-openssh = "ssh-server-dropbear"
+
+# IMAGE_FEATURES_CONFLICTS_foo = 'bar1 bar2'
+# An error exception would be raised if both image features foo and bar1(or bar2) are included
+
 CORE_IMAGE_BASE_INSTALL = '\
     task-core-boot \
     task-base-extended \
@@ -60,7 +68,8 @@ IMAGE_INSTALL ?= "${CORE_IMAGE_BASE_INSTALL}"
 
 X11_IMAGE_FEATURES  = "x11-base apps-x11-core package-management"
 ENHANCED_IMAGE_FEATURES = "${X11_IMAGE_FEATURES} apps-x11-games apps-x11-pimlico package-management"
-SATO_IMAGE_FEATURES = "${ENHANCED_IMAGE_FEATURES} x11-sato ssh-server-dropbear"
+SSHSERVER_IMAGE_FEATURES ??= "ssh-server-dropbear"
+SATO_IMAGE_FEATURES = "${ENHANCED_IMAGE_FEATURES} x11-sato ${SSHSERVER_IMAGE_FEATURES}"
 
 inherit image