[poky] [PATCH 2/3] bitbake: Introduce stamp-extra-info into build stamp file

[Dongxiao Xu]

For certain tasks, we need additional information in build stamp file
except the task name and file name. stamp-extra-info is introduced as
an flag adding to the end of stamp file name.

We also implement a blacklist, in which extra stamp information will
not be added.

Signed-off-by: Dongxiao Xu <dongxiao.xu at intel.com>
---
 bitbake/lib/bb/siggen.py |   14 +++++++++++++-
 1 files changed, 13 insertions(+), 1 deletions(-)

diff --git a/bitbake/lib/bb/siggen.py b/bitbake/lib/bb/siggen.py
index 4dc09b3..6c5a227 100644
--- a/bitbake/lib/bb/siggen.py
+++ b/bitbake/lib/bb/siggen.py
@@ -43,7 +43,17 @@ class SignatureGenerator(object):
         return
 
     def stampfile(self, stampbase, file_name, taskname):
-        return "%s.%s" % (stampbase, taskname)
+        stamp_extra_info = (self.data.getVarFlag(taskname, 'stamp-extra-info', True) or self.data.getVar('BB_STAMP_EXTRA', True) or "")
+
+        if self.stampblacklist:
+            self.sbl = re.compile(self.stampblacklist)
+        else:
+            self.sbl = None
+
+        if self.sbl and self.sbl.search(file_name):
+            return "%s.%s" % (stampbase, taskname)
+
+        return ("%s.%s.%s" % (stampbase, taskname, stamp_extra_info)).rstrip('.')
 
 class SignatureGeneratorBasic(SignatureGenerator):
     """
@@ -59,6 +69,8 @@ class SignatureGeneratorBasic(SignatureGenerator):
         self.lookupcache = {}
         self.basewhitelist = (data.getVar("BB_HASHBASE_WHITELIST", True) or "").split()
         self.taskwhitelist = data.getVar("BB_HASHTASK_WHITELIST", True) or None
+        self.stampblacklist = data.getVar("BB_STAMPTASK_BLACKLIST", True) or None
+        self.data = data
 
         if self.taskwhitelist:
             self.twl = re.compile(self.taskwhitelist)
-- 
1.6.3.3