diff --git a/bitbake/lib/bb/cache.py b/bitbake/lib/bb/cache.py
index 83f2ff1561..8485eb467a 100644
--- a/bitbake/lib/bb/cache.py
+++ b/bitbake/lib/bb/cache.py
@@ -43,7 +43,7 @@ except ImportError:
     logger.info("Importing cPickle failed. "
                 "Falling back to a very slow implementation.")
 
-__cache_version__ = "148"
+__cache_version__ = "149"
 
 def getCacheFile(path, filename, data_hash):
     return os.path.join(path, filename + "." + data_hash)
@@ -144,6 +144,7 @@ class CoreRecipeInfo(RecipeInfoCommon):
         self.fakerootenv      = self.getvar('FAKEROOTENV', metadata)
         self.fakerootdirs     = self.getvar('FAKEROOTDIRS', metadata)
         self.fakerootnoenv    = self.getvar('FAKEROOTNOENV', metadata)
+        self.extradepsfunc    = self.getvar('calculate_extra_depends', metadata)
 
     @classmethod
     def init_cacheData(cls, cachedata):
@@ -179,6 +180,7 @@ class CoreRecipeInfo(RecipeInfoCommon):
         cachedata.fakerootenv = {}
         cachedata.fakerootnoenv = {}
         cachedata.fakerootdirs = {}
+        cachedata.extradepsfunc = {}
 
     def add_cacheData(self, cachedata, fn):
         cachedata.task_deps[fn] = self.task_deps
@@ -246,6 +248,7 @@ class CoreRecipeInfo(RecipeInfoCommon):
         cachedata.fakerootenv[fn] = self.fakerootenv
         cachedata.fakerootnoenv[fn] = self.fakerootnoenv
         cachedata.fakerootdirs[fn] = self.fakerootdirs
+        cachedata.extradepsfunc[fn] = self.extradepsfunc
 
 
 
diff --git a/bitbake/lib/bb/cooker.py b/bitbake/lib/bb/cooker.py
index 74190ec9a7..9c58d95006 100644
--- a/bitbake/lib/bb/cooker.py
+++ b/bitbake/lib/bb/cooker.py
@@ -1109,28 +1109,6 @@ class BBCooker:
         tree = self.generatePkgDepTreeData(pkgs, 'build')
         bb.event.fire(bb.event.TargetsTreeGenerated(tree), self.data)
 
-    def buildWorldTargetList(self):
-        """
-         Build package list for "bitbake world"
-        """
-        parselog.debug(1, "collating packages for \"world\"")
-        for f in self.recipecache.possible_world:
-            terminal = True
-            pn = self.recipecache.pkg_fn[f]
-
-            for p in self.recipecache.pn_provides[pn]:
-                if p.startswith('virtual/'):
-                    parselog.debug(2, "World build skipping %s due to %s provider starting with virtual/", f, p)
-                    terminal = False
-                    break
-                for pf in self.recipecache.providers[p]:
-                    if self.recipecache.pkg_fn[pf] != pn:
-                        parselog.debug(2, "World build skipping %s due to both us and %s providing %s", f, pf, p)
-                        terminal = False
-                        break
-            if terminal:
-                self.recipecache.world_target.add(pn)
-
     def interactiveMode( self ):
         """Drop off into a shell"""
         try:
@@ -1591,7 +1569,7 @@ class BBCooker:
                 parselog.warn("Explicit target \"%s\" is in ASSUME_PROVIDED, ignoring" % pkg)
 
         if 'world' in pkgs_to_build:
-            self.buildWorldTargetList()
+            bb.providers.buildWorldTargetList(self.recipecache)
             pkgs_to_build.remove('world')
             for t in self.recipecache.world_target:
                 pkgs_to_build.append(t)
diff --git a/bitbake/lib/bb/providers.py b/bitbake/lib/bb/providers.py
index 637e1fab96..68c8d592d2 100644
--- a/bitbake/lib/bb/providers.py
+++ b/bitbake/lib/bb/providers.py
@@ -379,3 +379,29 @@ def getRuntimeProviders(dataCache, rdepend):
             logger.debug(1, "Assuming %s is a dynamic package, but it may not exist" % rdepend)
 
     return rproviders
+
+
+def buildWorldTargetList(dataCache):
+    """
+    Build package list for "bitbake world"
+    """
+    if dataCache.world_target:
+        return
+
+    logger.debug(1, "collating packages for \"world\"")
+    for f in dataCache.possible_world:
+        terminal = True
+        pn = dataCache.pkg_fn[f]
+
+        for p in dataCache.pn_provides[pn]:
+            if p.startswith('virtual/'):
+                logger.debug(2, "World build skipping %s due to %s provider starting with virtual/", f, p)
+                terminal = False
+                break
+            for pf in dataCache.providers[p]:
+                if dataCache.pkg_fn[pf] != pn:
+                    logger.debug(2, "World build skipping %s due to both us and %s providing %s", f, pf, p)
+                    terminal = False
+                    break
+        if terminal:
+            dataCache.world_target.add(pn)
diff --git a/bitbake/lib/bb/taskdata.py b/bitbake/lib/bb/taskdata.py
index 39c899ebb7..6e4d149e5a 100644
--- a/bitbake/lib/bb/taskdata.py
+++ b/bitbake/lib/bb/taskdata.py
@@ -172,6 +172,8 @@ class TaskData:
         if fnid in self.tasks_fnid:
             return
 
+        self.add_extra_deps(fn, dataCache)
+
         for task in task_deps['tasks']:
 
             # Work out task dependencies
@@ -242,6 +244,21 @@ class TaskData:
                 self.fail_fnid(fnid)
                 return
 
+    def add_extra_deps(self, fn, dataCache):
+        func = dataCache.extradepsfunc.get(fn, None)
+        if func:
+            bb.providers.buildWorldTargetList(dataCache)
+            pn = dataCache.pkg_fn[fn]
+            params = {'deps': dataCache.deps[fn],
+                      'world_target': dataCache.world_target,
+                      'pkg_pn': dataCache.pkg_pn,
+                      'self_pn': pn}
+            funcname = '_%s_calculate_extra_depends' % pn.replace('-', '_')
+            paramlist = ','.join(params.keys())
+            func = 'def %s(%s):\n%s\n\n%s(%s)' % (funcname, paramlist, func, funcname, paramlist)
+            bb.utils.better_exec(func, params)
+
+
     def have_build_target(self, target):
         """
         Have we a build target matching this name?