Bug #124041 - Make emerge show an informative warning message when one

or more eclasses override eclasses from PORTDIR. The warning can be
permanently disabled by setting PORTAGE_ECLASS_WARNING_ENABLE="0" in
/etc/make.conf. (trunk r8668)

svn path=/main/branches/2.1.2/; revision=8669

1 files changed, 9 insertions, 1 deletions

diff --git a/pym/eclass_cache.py b/pym/eclass_cache.py
index ede081d9c..b8d849368 100644
--- a/pym/eclass_cache.py
+++ b/pym/eclass_cache.py
@@ -23,6 +23,7 @@ class cache:
 		self.porttrees = [self.porttree_root]+overlays
 		self.porttrees = tuple(map(normalize_path, self.porttrees))
 		self._master_eclass_root = os.path.join(self.porttrees[0],"eclass")
+		self._master_eclasses_overridden = {}
 		self.update_eclasses()
 
 	def close_caches(self):
@@ -41,6 +42,7 @@ class cache:
 	def update_eclasses(self):
 		self.eclasses = {}
 		self._eclass_locations = {}
+		master_eclasses = {}
 		eclass_len = len(".eclass")
 		ignored_listdir_errnos = (errno.ENOENT, errno.ENOTDIR)
 		for x in [normalize_path(os.path.join(y,"eclass")) for y in self.porttrees]:
@@ -63,7 +65,13 @@ class cache:
 				ys=y[:-eclass_len]
 				self.eclasses[ys] = (x, long(mtime))
 				self._eclass_locations[ys] = x
-	
+				if x == self._master_eclass_root:
+					master_eclasses[ys] = mtime
+				else:
+					master_mtime = master_eclasses.get(ys)
+					if master_mtime and master_mtime != mtime:
+						self._master_eclasses_overridden[ys] = x
+
 	def is_eclass_data_valid(self, ec_dict):
 		if not isinstance(ec_dict, dict):
 			return False