=== modified file 'wafadmin/Build.py'
--- wafadmin/Build.py	2008-12-13 05:23:28 +0000
+++ wafadmin/Build.py	2008-12-13 19:48:06 +0000
@@ -589,6 +589,7 @@
 
 		debug('build: delayed operation TaskGen.flush() called')
 
+		posted_objects = []
 		if Options.options.compile_targets:
 			debug('task_gen: posting objects listed in compile_targets')
 
@@ -610,6 +611,7 @@
 			for target_obj in target_objects.values():
 				for x in target_obj:
 					x.post()
+					posted_objects.append(x)
 		else:
 			debug('task_gen: posting objects (normal)')
 			ln = self.launch_node()
@@ -620,6 +622,9 @@
 			for obj in self.all_task_gen:
 				if not obj.path.is_child_of(ln): continue
 				obj.post()
+				posted_objects.append(obj)
+		self._apply_automatic_deps(posted_objects)
+		
 
 	def env_of_name(self, name):
 		if not name:
@@ -801,3 +806,21 @@
 		f.write(s)
 		f.flush()
 
+	def _apply_automatic_deps(self, posted_objects):
+		print "apply_automatic_deps", posted_objects
+		generating_tasks = {} # map out_node -> task that generates the node
+		for taskgen in posted_objects:
+			for task in taskgen.tasks:
+				for node in task.outputs:
+					assert node.id not in generating_tasks
+					generating_tasks[node.id] = task
+		
+		for taskgen in posted_objects:
+			for task in taskgen.tasks:
+				for node in task.inputs:
+					try:
+						preceding_task = generating_tasks[node.id]
+					except KeyError:
+						continue
+					print "task %r generates node %r needed by task %r" % (preceding_task, node, task)
+					task.set_run_after(preceding_task)