diff --git a/reactos/tools/rbuild/backend/mingw/mingw.cpp b/reactos/tools/rbuild/backend/mingw/mingw.cpp
index b69789eb166..1f5b438d51a 100644
--- a/reactos/tools/rbuild/backend/mingw/mingw.cpp
+++ b/reactos/tools/rbuild/backend/mingw/mingw.cpp
@@ -58,6 +58,7 @@ const struct ModuleHandlerInformations ModuleHandlerInformations[] = {
 	{ HostFalse, "", "", "-nostartfiles -nostdlib" }, // BootProgram
 	{ HostFalse, "", "", "" }, // Win32SCR
 	{ HostFalse, "", "", "" }, // IdlHeader
+	{ HostFalse, "", "", "" }, // IdlInterface
 	{ HostFalse, "", "", "" }, // IsoRegTest
 	{ HostFalse, "", "", "" }, // LiveIsoRegTest
 	{ HostFalse, "", "", "" }, // EmbeddedTypeLib
diff --git a/reactos/tools/rbuild/backend/mingw/modulehandler.cpp b/reactos/tools/rbuild/backend/mingw/modulehandler.cpp
index f533471a22d..ba471d34b4e 100644
--- a/reactos/tools/rbuild/backend/mingw/modulehandler.cpp
+++ b/reactos/tools/rbuild/backend/mingw/modulehandler.cpp
@@ -173,6 +173,7 @@ MingwModuleHandler::InstanciateHandler (
 		case RpcProxy:
 		case MessageHeader:
 		case IdlHeader:
+		case IdlInterface:
 		case EmbeddedTypeLib:
 		case BootSector:
 			handler = new MingwModuleHandler( module );
@@ -301,6 +302,8 @@ MingwModuleHandler::ReferenceObjects (
 		return true;
 	if ( module.type == IdlHeader )
 		return true;
+	if ( module.type == IdlInterface )
+		return true;
 	if ( module.type == MessageHeader)
 		return true;
 	return false;
@@ -428,6 +431,8 @@ MingwModuleHandler::GetObjectFilename (
 			newExtension = "_c.o";
 		else if ( module.type == RpcProxy )
 			newExtension = "_p.o";
+		else if ( module.type == IdlInterface )
+			newExtension = "_i.o";
 		else
 			newExtension = ".h";
 	}
@@ -1053,7 +1058,7 @@ Rule arRule1 ( "$(intermediate_path_noext).a: $($(module_name)_OBJS)  $(dependen
                "$(intermediate_path_noext).a",
                "$(intermediate_dir)$(SEP)", NULL );
 Rule arRule2 ( "\t$(ECHO_AR)\n"
-              "\t${ar} -rc $@ $($(module_name)_OBJS)\n",
+              "\t${ar} -rc $@ $($(module_name)_OBJS) \n",
               NULL );
 Rule arHostRule2 ( "\t$(ECHO_HOSTAR)\n"
                    "\t${host_ar} -rc $@ $($(module_name)_OBJS)\n",
@@ -1161,11 +1166,21 @@ Rule winebuildRule ( "$(intermediate_path_unique).stubs.c: $(source) $(WINEBUILD
                      "$(intermediate_path_unique).stubs.o.d",
                      "$(intermediate_dir)$(SEP)", NULL );
 Rule widlHeaderRule ( "$(source): ${$(module_name)_precondition}\n"
-					  "$(intermediate_path_noext).h: $(source) $(dependencies) $(WIDL_TARGET) | $(intermediate_dir)\n"
+                      "$(intermediate_path_noext).h: $(source) $(dependencies) $(WIDL_TARGET) | $(intermediate_dir)\n"
                       "\t$(ECHO_WIDL)\n"
                       "\t$(Q)$(WIDL_TARGET) $($(module_name)_WIDLFLAGS) -h -H $(intermediate_path_noext).h $(source)\n",
                       "$(intermediate_path_noext).h",
                       "$(intermediate_dir)$(SEP)", NULL );
+Rule widlInterfaceRule ( "$(source): ${$(module_name)_precondition}\n"
+                       "$(intermediate_path_noext)_i.c: $(source) $(dependencies) $(WIDL_TARGET) | $(intermediate_dir)\n"
+                       "\t$(ECHO_WIDL)\n"
+                       "\t$(Q)$(WIDL_TARGET) $($(module_name)_WIDLFLAGS) -u -U $(intermediate_path_noext)_i.c $(source)\n"
+                       "$(intermediate_path_noext)_i.o: $(intermediate_path_noext)_i.c $(dependencies) | $(intermediate_dir)\n"
+                       "\t$(ECHO_CC)\n"
+                       "\t${gcc} -o $@ $($(module_name)_CFLAGS)$(compiler_flags) -fno-unit-at-a-time -c $<\n",
+                       "$(intermediate_path_noext)_i.c",
+                       "$(intermediate_path_noext)_i.o",
+                       "$(intermediate_dir)$(SEP)", NULL );
 Rule widlServerRule ( "$(source): ${$(module_name)_precondition}\n"
 					  "$(intermediate_path_noext)_s.c $(intermediate_path_noext)_s.h: $(source) $(dependencies) $(WIDL_TARGET) | $(intermediate_dir)\n"
                       "\t$(ECHO_WIDL)\n"
@@ -1185,7 +1200,7 @@ Rule widlServerRule ( "$(source): ${$(module_name)_precondition}\n"
                       "$(intermediate_path_noext)_s.o.d",
                       "$(intermediate_dir)$(SEP)", NULL );
 Rule widlClientRule ( "$(source): ${$(module_name)_precondition}\n"
-					  "$(intermediate_path_noext)_c.c $(intermediate_path_noext)_c.h: $(source) $(dependencies) $(WIDL_TARGET) | $(intermediate_dir)\n"
+                      "$(intermediate_path_noext)_c.c $(intermediate_path_noext)_c.h: $(source) $(dependencies) $(WIDL_TARGET) | $(intermediate_dir)\n"
                       "\t$(ECHO_WIDL)\n"
                       "\t$(Q)$(WIDL_TARGET) $($(module_name)_WIDLFLAGS) -h -H $(intermediate_path_noext)_c.h -c -C $(intermediate_path_noext)_c.c $(source)\n"
                       "ifeq ($(ROS_BUILDDEPS),full)\n"
@@ -1203,7 +1218,7 @@ Rule widlClientRule ( "$(source): ${$(module_name)_precondition}\n"
                       "$(intermediate_path_noext)_c.o.d",
                       "$(intermediate_dir)$(SEP)", NULL );
 Rule widlProxyRule ( "$(source): ${$(module_name)_precondition}\n"
-					 "$(intermediate_path_noext)_p.c $(intermediate_path_noext)_p.h: $(source) $(dependencies) $(WIDL_TARGET) | $(intermediate_dir)\n"
+                     "$(intermediate_path_noext)_p.c $(intermediate_path_noext)_p.h: $(source) $(dependencies) $(WIDL_TARGET) | $(intermediate_dir)\n"
                      "\t$(ECHO_WIDL)\n"
                      "\t$(Q)$(WIDL_TARGET) $($(module_name)_WIDLFLAGS) -h -H $(intermediate_path_noext)_p.h -p -P $(intermediate_path_noext)_p.c $(source)\n"
                      "ifeq ($(ROS_BUILDDEPS),full)\n"
@@ -1235,7 +1250,7 @@ Rule widlDlldataRule ( "$(source):  $(dependencies) ${$(module_name)_preconditio
                        "$(intermediate_path_noext).o",
                        "$(intermediate_path_noext).o.d", NULL );
 Rule widlTlbRule ( "$(source): ${$(module_name)_precondition}\n"
-				   "$(intermediate_dir)$(SEP)$(module_name).tlb: $(source) $(dependencies) $(WIDL_TARGET) | $(intermediate_dir)\n"
+                   "$(intermediate_dir)$(SEP)$(module_name).tlb: $(source) $(dependencies) $(WIDL_TARGET) | $(intermediate_dir)\n"
                    "\t$(ECHO_WIDL)\n"
                    "\t$(Q)$(WIDL_TARGET) $($(module_name)_WIDLFLAGS) -t -T $(intermediate_path_noext).tlb $(source)\n",
                    "$(intermediate_dir)$(SEP)", NULL );
@@ -1251,7 +1266,7 @@ Rule gppRule ( "$(eval $(call RBUILD_GPP_RULE,$(module_name),$(source),$(depende
                "$(intermediate_path_unique).o",
                "$(intermediate_path_unique).o.d", NULL );
 Rule gppHostRule ( "$(source): ${$(module_name)_precondition}\n"
-				   "$(intermediate_path_unique).o: $(source) $(dependencies) | $(intermediate_dir)\n"
+                   "$(intermediate_path_unique).o: $(source) $(dependencies) | $(intermediate_dir)\n"
                    "\t$(ECHO_HOSTCC)\n"
                    "\t${host_gpp} -o $@ $($(module_name)_CXXFLAGS)$(compiler_flags) -c $<\n",
                    "$(intermediate_path_unique).o", NULL );
@@ -1375,6 +1390,7 @@ MingwModuleHandler::GenerateCommands (
 		{ HostDontCare, RpcServer, ".idl", &widlServerRule },
 		{ HostDontCare, RpcClient, ".idl", &widlClientRule },
 		{ HostDontCare, RpcProxy, ".idl", &widlProxyRule },
+		{ HostDontCare, IdlInterface, ".idl", &widlInterfaceRule },
 		{ HostDontCare, EmbeddedTypeLib, ".idl", &widlTlbRule },
 		{ HostDontCare, TypeDontCare, ".idl", &widlHeaderRule },
 		{ HostTrue, TypeDontCare, ".c", &gccHostRule },
diff --git a/reactos/tools/rbuild/bootstrap.cpp b/reactos/tools/rbuild/bootstrap.cpp
index 31cef585c9e..8be6f969f30 100644
--- a/reactos/tools/rbuild/bootstrap.cpp
+++ b/reactos/tools/rbuild/bootstrap.cpp
@@ -71,6 +71,7 @@ Bootstrap::IsSupportedModuleType ( ModuleType type )
 		case RpcProxy:
 		case Alias:
 		case IdlHeader:
+		case IdlInterface:
 		case MessageHeader:
 		case EmbeddedTypeLib:
 		case ElfExecutable:
diff --git a/reactos/tools/rbuild/include.cpp b/reactos/tools/rbuild/include.cpp
index a2ead07ae72..863ebf87436 100644
--- a/reactos/tools/rbuild/include.cpp
+++ b/reactos/tools/rbuild/include.cpp
@@ -121,7 +121,8 @@ Include::GetDefaultDirectoryTree ( const Module* module ) const
 	     ( module->type == RpcServer ||
 	       module->type == RpcClient ||
 	       module->type == RpcProxy ||
-	       module->type == IdlHeader) )
+		   module->type == IdlHeader ||
+	       module->type == IdlInterface) )
 		return IntermediateDirectory;
 	else
 		return SourceDirectory;
diff --git a/reactos/tools/rbuild/module.cpp b/reactos/tools/rbuild/module.cpp
index aea145fea96..fffcedc7616 100644
--- a/reactos/tools/rbuild/module.cpp
+++ b/reactos/tools/rbuild/module.cpp
@@ -941,6 +941,8 @@ Module::GetModuleType ( const string& location, const XMLAttribute& attribute )
 		return Alias;
 	if ( attribute.value == "idlheader" )
 		return IdlHeader;
+	if ( attribute.value == "idlinterface" )
+		return IdlInterface;
 	if ( attribute.value == "embeddedtypelib" )
 		return EmbeddedTypeLib;
 	if ( attribute.value == "elfexecutable" )
@@ -991,6 +993,7 @@ Module::GetTargetDirectoryTree () const
 		case RpcProxy:
 		case Alias:
 		case IdlHeader:
+		case IdlInterface:
 		case MessageHeader:
 			return IntermediateDirectory;
 		case TypeDontCare:
@@ -1047,6 +1050,7 @@ Module::GetDefaultModuleExtension () const
 		case RpcServer:
 		case RpcClient:
 		case RpcProxy:
+		case IdlInterface:
 			return ".o";
 		case Alias:
 		case ElfExecutable:
@@ -1112,6 +1116,7 @@ Module::GetDefaultModuleEntrypoint () const
 		case Alias:
 		case BootProgram:
 		case IdlHeader:
+		case IdlInterface:
 		case MessageHeader:
 		case ElfExecutable:
 		case EmbeddedTypeLib:
@@ -1164,6 +1169,7 @@ Module::GetDefaultModuleBaseaddress () const
 		case Alias:
 		case BootProgram:
 		case IdlHeader:
+		case IdlInterface:
 		case MessageHeader:
 		case EmbeddedTypeLib:
 		case Cabinet:
@@ -1220,6 +1226,7 @@ Module::GetDefaultModuleCRT () const
 		case Alias:
 		case BootProgram:
 		case IdlHeader:
+		case IdlInterface:
 		case MessageHeader:
 		case EmbeddedTypeLib:
 		case Cabinet:
@@ -1276,6 +1283,7 @@ Module::IsDLL () const
 		case RpcProxy:
 		case Alias:
 		case IdlHeader:
+		case IdlInterface:
 		case MessageHeader:
 		case EmbeddedTypeLib:
 		case ElfExecutable:
diff --git a/reactos/tools/rbuild/rbuild.h b/reactos/tools/rbuild/rbuild.h
index 5d6bafa6b09..6ce938ad2db 100644
--- a/reactos/tools/rbuild/rbuild.h
+++ b/reactos/tools/rbuild/rbuild.h
@@ -298,6 +298,7 @@ enum ModuleType
 	BootProgram,
 	Win32SCR,
 	IdlHeader,
+	IdlInterface,
 	IsoRegTest,
 	LiveIsoRegTest,
 	EmbeddedTypeLib,