1 files changed, 28 insertions, 0 deletions

diff --git a/meta/classes/distro_features_check.bbclass b/meta/classes/distro_features_check.bbclass
new file mode 100644
index 0000000000..61b11b7d53
--- /dev/null
+++ b/meta/classes/distro_features_check.bbclass
@@ -0,0 +1,28 @@
+# Allow checking of required and conflicting DISTRO_FEATURES
+#
+# REQUIRED_DISTRO_FEATURES: ensure every item on this list is included
+#                           in DISTRO_FEATURES.
+# CONFLICT_DISTRO_FEATURES: ensure no item in this list is included in
+#                           DISTRO_FEATURES.
+#
+# Copyright 2013 (C) O.S. Systems Software LTDA.
+
+python () {
+    required_distro_features = d.getVar('REQUIRED_DISTRO_FEATURES', True)
+    if required_distro_features:
+        required_distro_features = required_distro_features.split()
+        distro_features = (d.getVar('DISTRO_FEATURES', True) or "").split()
+        for f in required_distro_features:
+            if f in distro_features:
+                break
+        else:
+            raise bb.parse.SkipPackage("missing required distro feature %s (not in DISTRO_FEATURES)" % required_distro_features)
+
+    conflict_distro_features = d.getVar('CONFLICT_DISTRO_FEATURES', True)
+    if conflict_distro_features:
+        conflict_distro_features = conflict_distro_features.split()
+        distro_features = (d.getVar('DISTRO_FEATURES', True) or "").split()
+        for f in conflict_distro_features:
+            if f in distro_features:
+                raise bb.parse.SkipPackage("conflicting distro feature %s (in DISTRO_FEATURES)" % conflict_distro_features)
+}