[2.8][scarthgap][PATCH] data: fix issue with varflag exclusion

From: Marcio Henriques <[email protected]>

This patch fixes an issue when checking if a varflag
can be safely excluded.

BB_SIGNATURE_EXCLUDE_FLAGS lists variable flags that
can be safely excluded from checksum and dependency
data for keys in the datastore.

When bitbake checks if a varflag must be excluded it
checks if the varflag name is part of the string stored
in BB_SIGNATURE_EXCLUDE_FLAGS.

As an example, if the varflag 'filename' is in
BB_SIGNATURE_EXCLUDE_FLAGS, the varflag 'name'
will also be excluded because the check will return 'True'
when checking if the varflag is part of the string with
the varflags to exclude.

To fix this issue the string from BB_SIGNATURE_EXCLUDE_FLAGS
is converted to a list before checking if a varflag is part of it.

Signed-off-by: Marcio Henriques <[email protected]>
Signed-off-by: Mathieu Dubois-Briand <[email protected]>
Signed-off-by: Richard Purdie <[email protected]>
(cherry picked from commit 8ab71d0ce302521da6a7e18c887cd85d9a94e8ee)
---
 lib/bb/data.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/bb/data.py b/lib/bb/data.py
index f672a844..53a7a092 100644
--- a/lib/bb/data.py
+++ b/lib/bb/data.py
@@ -377,7 +377,7 @@ def generate_dependencies(d, ignored_vars):
     mod_funcs = set(bb.codeparser.modulecode_deps.keys())
     keys = set(key for key in d if not key.startswith("__")) | mod_funcs
     shelldeps = set(key for key in d.getVar("__exportlist", False) if bb.utils.to_boolean(d.getVarFlag(key, "export")) and not bb.utils.to_boolean(d.getVarFlag(key, "unexport")))
-    varflagsexcl = d.getVar('BB_SIGNATURE_EXCLUDE_FLAGS')
+    varflagsexcl = (d.getVar('BB_SIGNATURE_EXCLUDE_FLAGS') or "").split()
 
     codeparserd = d.createCopy()
     for forced in (d.getVar('BB_HASH_CODEPARSER_VALS') or "").split():