2 files changed, 16 insertions, 4 deletions

diff --git a/bitbake/lib/bb/build.py b/bitbake/lib/bb/build.py
index 30e5497d1d..1e041a2a3e 100644
--- a/bitbake/lib/bb/build.py
+++ b/bitbake/lib/bb/build.py
@@ -91,8 +91,9 @@ class TaskSucceeded(TaskBase):
 class TaskFailed(TaskBase):
     """Task execution failed"""
 
-    def __init__(self, task, logfile, metadata):
+    def __init__(self, task, logfile, metadata, errprinted = False):
         self.logfile = logfile
+        self.errprinted = errprinted
         super(TaskFailed, self).__init__(task, metadata)
 
 class TaskInvalid(TaskBase):
@@ -286,6 +287,13 @@ def _exec_task(fn, task, d, quieterr):
     prefuncs = localdata.getVarFlag(task, 'prefuncs', expand=True)
     postfuncs = localdata.getVarFlag(task, 'postfuncs', expand=True)
 
+    class ErrorCheckHandler(logging.Handler):
+        def __init__(self):
+            self.triggered = False
+            logging.Handler.__init__(self, logging.ERROR)
+        def emit(self, record):
+            self.triggered = True
+
     # Handle logfiles
     si = file('/dev/null', 'r')
     try:
@@ -311,6 +319,9 @@ def _exec_task(fn, task, d, quieterr):
     handler.setLevel(logging.DEBUG - 2)
     bblogger.addHandler(handler)
 
+    errchk = ErrorCheckHandler()
+    bblogger.addHandler(errchk)
+
     localdata.setVar('BB_LOGFILE', logfn)
 
     event.fire(TaskStarted(task, localdata), localdata)
@@ -322,8 +333,9 @@ def _exec_task(fn, task, d, quieterr):
             exec_func(func, localdata)
     except FuncFailed as exc:
         if not quieterr:
+            errprinted = errchk.triggered
             logger.error(str(exc))
-            event.fire(TaskFailed(task, logfn, localdata), localdata)
+            event.fire(TaskFailed(task, logfn, localdata, errprinted), localdata)
         return 1
     finally:
         sys.stdout.flush()
@@ -366,7 +378,7 @@ def exec_task(fn, task, d):
         if not quieterr:
             logger.error("Build of %s failed" % (task))
             logger.error(format_exc())
-            failedevent = TaskFailed(task, None, d)
+            failedevent = TaskFailed(task, None, d, True)
             event.fire(failedevent, d)
         return 1
 
diff --git a/bitbake/lib/bb/ui/knotty.py b/bitbake/lib/bb/ui/knotty.py
index 5366386b20..205a8d8f39 100644
--- a/bitbake/lib/bb/ui/knotty.py
+++ b/bitbake/lib/bb/ui/knotty.py
@@ -142,7 +142,7 @@ def main(server, eventHandler):
                 logfile = event.logfile
                 if logfile and os.path.exists(logfile):
                     print("ERROR: Logfile of failure stored in: %s" % logfile)
-                    if 1 or includelogs:
+                    if includelogs and not event.errprinted:
                         print("Log data follows:")
                         f = open(logfile, "r")
                         lines = []