[OE-core] [PATCH 6/7] rootfs.py: Reduce spam from _log_check_warn()

[Peter Kjellerstedt]

For each warning found in the log, _log_check_warn() would output a
line stating that it had found a warning, then the actual warning and
finally an empty line. This is quite excessive when there are many
warnings in the log.

With this change the output is instead a line stating how many
warnings were found, followed by the warnings. This makes the output
much more compact and actually much more readable.

Signed-off-by: Peter Kjellerstedt <peter.kjellerstedt at axis.com>
---
 meta/lib/oe/rootfs.py | 11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)

diff --git a/meta/lib/oe/rootfs.py b/meta/lib/oe/rootfs.py
index 741399a..479e4cc 100644
--- a/meta/lib/oe/rootfs.py
+++ b/meta/lib/oe/rootfs.py
@@ -50,6 +50,7 @@ class Rootfs(object):
         excludes = [re.compile(x) for x in excludes]
         r = re.compile('^(warn|Warn|WARNING:)')
         log_path = self.d.expand("${T}/log.do_rootfs")
+        messages = []
         with open(log_path, 'r') as log:
             for line in log:
                 for ee in excludes:
@@ -61,8 +62,14 @@ class Rootfs(object):
 
                 m = r.search(line)
                 if m:
-                    bb.warn('[log_check] %s: found a warning message in the logfile (keyword \'%s\'):\n[log_check] %s'
-				    % (self.d.getVar('PN', True), m.group(), line))
+                    messages.append('[log_check] %s' % line)
+        if messages:
+            if len(messages) == 1:
+                msg = 'a warning message'
+            else:
+                msg = '%d warning messages' % len(messages)
+            bb.warn('[log_check] %s: found %s in the logfile:\n%s'
+                    % (self.d.getVar('PN', True), msg, ''.join(messages)))
 
     def _log_check_error(self):
         # Ignore any lines containing log_check to avoid recursion, and ignore
-- 
2.1.0