Clean orphan Qt files

waflib/extras/stale.py

@@ -3,8 +3,8 @@
 # Thomas Nagy, 2006-2014 (ita)
 
 """
-Add a pre-build hook to remove all build files
-which do not have a corresponding target
+Add a pre-build hook to remove build files (declared in the system)
+that do not have a corresponding target
 
 This can be used for example to remove the targets
 that have changed name without performing
@@ -18,7 +18,49 @@ to exclude some folders for example.
 from waflib import Logs, Build
 from waflib.Runner import Parallel
 
-DYNAMIC_EXT = ['.moc']
+DYNAMIC_EXT = [] # add your non-cleanable files/extensions here
+MOC_H_EXTS = '.cpp .cxx .hpp .hxx .h'.split()
+
+def can_delete(node):
+	"""Imperfect moc cleanup which does not look for a Q_OBJECT macro in the files"""
+	if not node.name.endswith('.moc'):
+		return True
+	base = node.name[:-4]
+	p1 = node.parent.get_src()
+	p2 = node.parent.get_bld()
+	for k in MOC_H_EXTS:
+		h_name = base + k
+		n = p1.search_node(h_name)
+		if n:
+			return False
+		n = p2.search_node(h_name)
+		if n:
+			return False
+
+		# foo.cpp.moc, foo.h.moc, etc.
+		if base.endswith(k):
+			return False
+
+	return True
+
+# recursion over the nodes to find the stale files
+def stale_rec(node, nodes):
+	if node.abspath() in node.ctx.env[Build.CFG_FILES]:
+		return
+
+	if getattr(node, 'children', []):
+		for x in node.children.values():
+			if x.name != "c4che":
+				stale_rec(x, nodes)
+	else:
+		for ext in DYNAMIC_EXT:
+			if node.name.endswith(ext):
+				break
+		else:
+			if not node in nodes:
+				if can_delete(node):
+					Logs.warn("Removing stale file -> %s" % node.abspath())
+					node.delete()
 
 old = Parallel.refill_task_list
 def refill_task_list(self):
@@ -48,25 +90,7 @@ def refill_task_list(self):
 			except:
 				pass
 
-	# recursion over the nodes to find the stale files
-	def iter(node):
-
-		if node.abspath() in bld.env[Build.CFG_FILES]:
-			return
-
-		if getattr(node, 'children', []):
-			for x in node.children.values():
-				if x.name != "c4che":
-					iter(x)
-		else:
-			for ext in DYNAMIC_EXT:
-				if node.name.endswith(ext):
-					break
-			else:
-				if not node in nodes:
-					Logs.warn("Removing stale file -> %s" % node.abspath())
-					node.delete()
-	iter(bld.bldnode)
+	stale_rec(bld.bldnode, nodes)
 	return iit
 
 Parallel.refill_task_list = refill_task_list