diff --git a/poky/bitbake/lib/bb/msg.py b/poky/bitbake/lib/bb/msg.py
index 291b38f..c95a874 100644
--- a/poky/bitbake/lib/bb/msg.py
+++ b/poky/bitbake/lib/bb/msg.py
@@ -30,7 +30,9 @@
     PLAIN = logging.INFO + 1
     VERBNOTE = logging.INFO + 2
     ERROR = logging.ERROR
+    ERRORONCE = logging.ERROR - 1
     WARNING = logging.WARNING
+    WARNONCE = logging.WARNING - 1
     CRITICAL = logging.CRITICAL
 
     levelnames = {
@@ -42,7 +44,9 @@
         PLAIN  : '',
         VERBNOTE: 'NOTE',
         WARNING : 'WARNING',
+        WARNONCE : 'WARNING',
         ERROR   : 'ERROR',
+        ERRORONCE   : 'ERROR',
         CRITICAL: 'ERROR',
     }
 
@@ -58,7 +62,9 @@
         PLAIN   : BASECOLOR,
         VERBNOTE: BASECOLOR,
         WARNING : YELLOW,
+        WARNONCE : YELLOW,
         ERROR   : RED,
+        ERRORONCE : RED,
         CRITICAL: RED,
     }
 
@@ -121,6 +127,23 @@
             return True
         return False
 
+class LogFilterShowOnce(logging.Filter):
+    def __init__(self):
+        self.seen_warnings = set()
+        self.seen_errors = set()
+
+    def filter(self, record):
+        msg = record.msg
+        if record.levelno == bb.msg.BBLogFormatter.WARNONCE:
+            if record.msg in self.seen_warnings:
+                return False
+            self.seen_warnings.add(record.msg)
+        if record.levelno == bb.msg.BBLogFormatter.ERRORONCE:
+            if record.msg in self.seen_errors:
+                return False
+            self.seen_errors.add(record.msg)
+        return True
+
 class LogFilterGEQLevel(logging.Filter):
     def __init__(self, level):
         self.strlevel = str(level)
@@ -206,6 +229,7 @@
     """Standalone logger creation function"""
     logger = logging.getLogger(name)
     console = logging.StreamHandler(output)
+    console.addFilter(bb.msg.LogFilterShowOnce())
     format = bb.msg.BBLogFormatter("%(levelname)s: %(message)s")
     if color == 'always' or (color == 'auto' and output.isatty()):
         format.enable_color()
@@ -293,10 +317,17 @@
 
     # Convert all level parameters to integers in case users want to use the
     # bitbake defined level names
-    for h in logconfig["handlers"].values():
+    for name, h in logconfig["handlers"].items():
         if "level" in h:
             h["level"] = bb.msg.stringToLevel(h["level"])
 
+        # Every handler needs its own instance of the once filter.
+        once_filter_name = name + ".showonceFilter"
+        logconfig.setdefault("filters", {})[once_filter_name] = {
+            "()": "bb.msg.LogFilterShowOnce",
+        }
+        h.setdefault("filters", []).append(once_filter_name)
+
     for l in logconfig["loggers"].values():
         if "level" in l:
             l["level"] = bb.msg.stringToLevel(l["level"])