diff --git a/poky/meta/lib/oe/sstatesig.py b/poky/meta/lib/oe/sstatesig.py
index d24e373..21ae0a7 100644
--- a/poky/meta/lib/oe/sstatesig.py
+++ b/poky/meta/lib/oe/sstatesig.py
@@ -2,9 +2,10 @@
 # SPDX-License-Identifier: GPL-2.0-only
 #
 import bb.siggen
+import bb.runqueue
 import oe
 
-def sstate_rundepfilter(siggen, fn, recipename, task, dep, depname, dataCache):
+def sstate_rundepfilter(siggen, fn, recipename, task, dep, depname, dataCaches):
     # Return True if we should keep the dependency, False to drop it
     def isNative(x):
         return x.endswith("-native")
@@ -12,23 +13,26 @@
         return "-cross-" in x
     def isNativeSDK(x):
         return x.startswith("nativesdk-")
-    def isKernel(fn):
-        inherits = " ".join(dataCache.inherits[fn])
+    def isKernel(mc, fn):
+        inherits = " ".join(dataCaches[mc].inherits[fn])
         return inherits.find("/module-base.bbclass") != -1 or inherits.find("/linux-kernel-base.bbclass") != -1
-    def isPackageGroup(fn):
-        inherits = " ".join(dataCache.inherits[fn])
+    def isPackageGroup(mc, fn):
+        inherits = " ".join(dataCaches[mc].inherits[fn])
         return "/packagegroup.bbclass" in inherits
-    def isAllArch(fn):
-        inherits = " ".join(dataCache.inherits[fn])
+    def isAllArch(mc, fn):
+        inherits = " ".join(dataCaches[mc].inherits[fn])
         return "/allarch.bbclass" in inherits
-    def isImage(fn):
-        return "/image.bbclass" in " ".join(dataCache.inherits[fn])
+    def isImage(mc, fn):
+        return "/image.bbclass" in " ".join(dataCaches[mc].inherits[fn])
 
-    # (Almost) always include our own inter-task dependencies.
-    # The exception is the special do_kernel_configme->do_unpack_and_patch
-    # dependency from archiver.bbclass.
-    if recipename == depname:
-        if task == "do_kernel_configme" and dep.endswith(".do_unpack_and_patch"):
+    depmc, _, deptaskname, depmcfn = bb.runqueue.split_tid_mcfn(dep)
+    mc, _ = bb.runqueue.split_mc(fn)
+
+    # (Almost) always include our own inter-task dependencies (unless it comes
+    # from a mcdepends). The exception is the special
+    # do_kernel_configme->do_unpack_and_patch dependency from archiver.bbclass.
+    if recipename == depname and depmc == mc:
+        if task == "do_kernel_configme" and deptaskname == "do_unpack_and_patch":
             return False
         return True
 
@@ -47,11 +51,11 @@
     # Only target packages beyond here
 
     # allarch packagegroups are assumed to have well behaved names which don't change between architecures/tunes
-    if isPackageGroup(fn) and isAllArch(fn) and not isNative(depname):
+    if isPackageGroup(mc, fn) and isAllArch(mc, fn) and not isNative(depname):
         return False
 
     # Exclude well defined machine specific configurations which don't change ABI
-    if depname in siggen.abisaferecipes and not isImage(fn):
+    if depname in siggen.abisaferecipes and not isImage(mc, fn):
         return False
 
     # Kernel modules are well namespaced. We don't want to depend on the kernel's checksum
@@ -59,10 +63,9 @@
     # is machine specific.
     # Therefore if we're not a kernel or a module recipe (inheriting the kernel classes)
     # and we reccomend a kernel-module, we exclude the dependency.
-    depfn = dep.rsplit(":", 1)[0]
-    if dataCache and isKernel(depfn) and not isKernel(fn):
-        for pkg in dataCache.runrecs[fn]:
-            if " ".join(dataCache.runrecs[fn][pkg]).find("kernel-module-") != -1:
+    if dataCaches and isKernel(depmc, depmcfn) and not isKernel(mc, fn):
+        for pkg in dataCaches[mc].runrecs[fn]:
+            if " ".join(dataCaches[mc].runrecs[fn][pkg]).find("kernel-module-") != -1:
                 return False
 
     # Default to keep dependencies
@@ -87,10 +90,12 @@
         self.abisaferecipes = (data.getVar("SIGGEN_EXCLUDERECIPES_ABISAFE") or "").split()
         self.saferecipedeps = (data.getVar("SIGGEN_EXCLUDE_SAFE_RECIPE_DEPS") or "").split()
         pass
-    def rundep_check(self, fn, recipename, task, dep, depname, dataCache = None):
-        return sstate_rundepfilter(self, fn, recipename, task, dep, depname, dataCache)
+    def rundep_check(self, fn, recipename, task, dep, depname, dataCaches = None):
+        return sstate_rundepfilter(self, fn, recipename, task, dep, depname, dataCaches)
 
 class SignatureGeneratorOEBasicHashMixIn(object):
+    supports_multiconfig_datacaches = True
+
     def init_rundepcheck(self, data):
         self.abisaferecipes = (data.getVar("SIGGEN_EXCLUDERECIPES_ABISAFE") or "").split()
         self.saferecipedeps = (data.getVar("SIGGEN_EXCLUDE_SAFE_RECIPE_DEPS") or "").split()
@@ -126,8 +131,8 @@
             newsafedeps.append(a1 + "->" + a2)
         self.saferecipedeps = newsafedeps
 
-    def rundep_check(self, fn, recipename, task, dep, depname, dataCache = None):
-        return sstate_rundepfilter(self, fn, recipename, task, dep, depname, dataCache)
+    def rundep_check(self, fn, recipename, task, dep, depname, dataCaches = None):
+        return sstate_rundepfilter(self, fn, recipename, task, dep, depname, dataCaches)
 
     def get_taskdata(self):
         return (self.lockedpnmap, self.lockedhashfn, self.lockedhashes) + super().get_taskdata()
@@ -142,41 +147,41 @@
         self.dump_lockedsigs(sigfile)
         return super(bb.siggen.SignatureGeneratorBasicHash, self).dump_sigs(dataCache, options)
 
-    def prep_taskhash(self, tid, deps, dataCache):
-        super().prep_taskhash(tid, deps, dataCache)
+    def prep_taskhash(self, tid, deps, dataCaches):
+        super().prep_taskhash(tid, deps, dataCaches)
         if hasattr(self, "extramethod"):
-            (_, _, _, fn) = bb.runqueue.split_tid_mcfn(tid)
-            inherits = " ".join(dataCache.inherits[fn])    
+            (mc, _, _, fn) = bb.runqueue.split_tid_mcfn(tid)
+            inherits = " ".join(dataCaches[mc].inherits[fn])
             if inherits.find("/native.bbclass") != -1 or inherits.find("/cross.bbclass") != -1:
                 self.extramethod[tid] = ":" + self.buildarch
 
-    def get_taskhash(self, tid, deps, dataCache):
+    def get_taskhash(self, tid, deps, dataCaches):
         if tid in self.lockedhashes:
             if self.lockedhashes[tid]:
                 return self.lockedhashes[tid]
             else:
-                return super().get_taskhash(tid, deps, dataCache)
+                return super().get_taskhash(tid, deps, dataCaches)
 
-        # get_taskhash will call get_unihash internally in the parent class, we 
+        # get_taskhash will call get_unihash internally in the parent class, we
         # need to disable our filter of it whilst this runs else
         # incorrect hashes can be calculated.
         self._internal = True
-        h = super().get_taskhash(tid, deps, dataCache)
+        h = super().get_taskhash(tid, deps, dataCaches)
         self._internal = False
 
         (mc, _, task, fn) = bb.runqueue.split_tid_mcfn(tid)
 
-        recipename = dataCache.pkg_fn[fn]
+        recipename = dataCaches[mc].pkg_fn[fn]
         self.lockedpnmap[fn] = recipename
-        self.lockedhashfn[fn] = dataCache.hashfn[fn]
+        self.lockedhashfn[fn] = dataCaches[mc].hashfn[fn]
 
         unlocked = False
         if recipename in self.unlockedrecipes:
             unlocked = True
         else:
             def recipename_from_dep(dep):
-                fn = bb.runqueue.fn_from_tid(dep)
-                return dataCache.pkg_fn[fn]
+                (depmc, _, _, depfn) = bb.runqueue.split_tid_mcfn(dep)
+                return dataCaches[depmc].pkg_fn[depfn]
 
             # If any unlocked recipe is in the direct dependencies then the
             # current recipe should be unlocked as well.