bitbake/ast: Fix ??= vs. ?= handling

As the code stands, setting a variable with ??= could result in a ?=
variable not overriding it. This patch fixes the issue by allowing
the ast to make lookups that ignore any ??= set variables.

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 2 insertions, 2 deletions

diff --git a/lib/bb/parse/ast.py b/lib/bb/parse/ast.py
index e41bb74f4..2301abd12 100644
--- a/lib/bb/parse/ast.py
+++ b/lib/bb/parse/ast.py
@@ -84,9 +84,9 @@ class DataNode(AstNode):
 
     def getFunc(self, key, data):
         if 'flag' in self.groupd and self.groupd['flag'] != None:
-            return bb.data.getVarFlag(key, self.groupd['flag'], data)
+            return data.getVarFlag(key, self.groupd['flag'], noweakdefault=True)
         else:
-            return bb.data.getVar(key, data)
+            return data.getVar(key, noweakdefault=True)
 
     def eval(self, data):
         groupd = self.groupd