]> git.proxmox.com Git - mirror_edk2.git/blobdiff - BaseTools/Source/Python/AutoGen/AutoGen.py
BaseTools:Change the path of the file that Binary Cache
[mirror_edk2.git] / BaseTools / Source / Python / AutoGen / AutoGen.py
index 95370d182157243e04153cc0709a5c0b05a0fd94..a5bef4f7c62a0ec3ab7346460bce44c61cc93349 100644 (file)
@@ -1,16 +1,11 @@
 ## @file\r
 # Generate AutoGen.h, AutoGen.c and *.depex files\r
 #\r
-# Copyright (c) 2007 - 2018, Intel Corporation. All rights reserved.<BR>\r
+# Copyright (c) 2007 - 2019, Intel Corporation. All rights reserved.<BR>\r
 # Copyright (c) 2018, Hewlett Packard Enterprise Development, L.P.<BR>\r
+# Copyright (c) 2019, American Megatrends, Inc. All rights reserved.<BR>\r
 #\r
-# This program and the accompanying materials\r
-# are licensed and made available under the terms and conditions of the BSD License\r
-# which accompanies this distribution.  The full text of the license may be found at\r
-# http://opensource.org/licenses/bsd-license.php\r
-#\r
-# THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
-# WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
+# SPDX-License-Identifier: BSD-2-Clause-Patent\r
 #\r
 \r
 ## Import Modules\r
@@ -30,7 +25,7 @@ from io import BytesIO
 \r
 from .StrGather import *\r
 from .BuildEngine import BuildRule\r
-\r
+import shutil\r
 from Common.LongFilePathSupport import CopyLongFilePath\r
 from Common.BuildToolError import *\r
 from Common.DataType import *\r
@@ -52,6 +47,7 @@ from .GenVar import VariableMgr, var_info
 from collections import OrderedDict\r
 from collections import defaultdict\r
 from Workspace.WorkspaceCommon import OrderedListDict\r
+from Common.ToolDefClassObject import gDefaultToolsDefFile\r
 \r
 from Common.caching import cached_property, cached_class_function\r
 \r
@@ -85,9 +81,6 @@ gMakeTypeMap = {TAB_COMPILER_MSFT:"nmake", "GCC":"gmake"}
 ## Build rule configuration file\r
 gDefaultBuildRuleFile = 'build_rule.txt'\r
 \r
-## Tools definition configuration file\r
-gDefaultToolsDefFile = 'tools_def.txt'\r
-\r
 ## Build rule default version\r
 AutoGenReqBuildRuleVerNum = "0.1"\r
 \r
@@ -172,6 +165,73 @@ ${tail_comments}
 ## @AsBuilt${BEGIN}\r
 ##   ${flags_item}${END}\r
 """)\r
+## Split command line option string to list\r
+#\r
+# subprocess.Popen needs the args to be a sequence. Otherwise there's problem\r
+# in non-windows platform to launch command\r
+#\r
+def _SplitOption(OptionString):\r
+    OptionList = []\r
+    LastChar = " "\r
+    OptionStart = 0\r
+    QuotationMark = ""\r
+    for Index in range(0, len(OptionString)):\r
+        CurrentChar = OptionString[Index]\r
+        if CurrentChar in ['"', "'"]:\r
+            if QuotationMark == CurrentChar:\r
+                QuotationMark = ""\r
+            elif QuotationMark == "":\r
+                QuotationMark = CurrentChar\r
+            continue\r
+        elif QuotationMark:\r
+            continue\r
+\r
+        if CurrentChar in ["/", "-"] and LastChar in [" ", "\t", "\r", "\n"]:\r
+            if Index > OptionStart:\r
+                OptionList.append(OptionString[OptionStart:Index - 1])\r
+            OptionStart = Index\r
+        LastChar = CurrentChar\r
+    OptionList.append(OptionString[OptionStart:])\r
+    return OptionList\r
+\r
+#\r
+# Convert string to C format array\r
+#\r
+def _ConvertStringToByteArray(Value):\r
+    Value = Value.strip()\r
+    if not Value:\r
+        return None\r
+    if Value[0] == '{':\r
+        if not Value.endswith('}'):\r
+            return None\r
+        Value = Value.replace(' ', '').replace('{', '').replace('}', '')\r
+        ValFields = Value.split(',')\r
+        try:\r
+            for Index in range(len(ValFields)):\r
+                ValFields[Index] = str(int(ValFields[Index], 0))\r
+        except ValueError:\r
+            return None\r
+        Value = '{' + ','.join(ValFields) + '}'\r
+        return Value\r
+\r
+    Unicode = False\r
+    if Value.startswith('L"'):\r
+        if not Value.endswith('"'):\r
+            return None\r
+        Value = Value[1:]\r
+        Unicode = True\r
+    elif not Value.startswith('"') or not Value.endswith('"'):\r
+        return None\r
+\r
+    Value = eval(Value)         # translate escape character\r
+    NewValue = '{'\r
+    for Index in range(0, len(Value)):\r
+        if Unicode:\r
+            NewValue = NewValue + str(ord(Value[Index]) % 0x10000) + ','\r
+        else:\r
+            NewValue = NewValue + str(ord(Value[Index]) % 0x100) + ','\r
+    Value = NewValue + '0}'\r
+    return Value\r
 \r
 ## Base class for AutoGen\r
 #\r
@@ -203,8 +263,6 @@ class AutoGen(object):
         RetVal = cls.__ObjectCache[Key] = super(AutoGen, cls).__new__(cls)\r
         return RetVal\r
 \r
-    def __init__ (self, Workspace, MetaFile, Target, Toolchain, Arch, *args, **kwargs):\r
-        super(AutoGen, self).__init__(self, Workspace, MetaFile, Target, Toolchain, Arch, *args, **kwargs)\r
 \r
     ## hash() operator\r
     #\r
@@ -237,7 +295,6 @@ class WorkspaceAutoGen(AutoGen):
     # call super().__init__ then call the worker function with different parameter count\r
     def __init__(self, Workspace, MetaFile, Target, Toolchain, Arch, *args, **kwargs):\r
         if not hasattr(self, "_Init"):\r
-            super(WorkspaceAutoGen, self).__init__(Workspace, MetaFile, Target, Toolchain, Arch, *args, **kwargs)\r
             self._InitWorker(Workspace, MetaFile, Target, Toolchain, Arch, *args, **kwargs)\r
             self._Init = True\r
 \r
@@ -278,10 +335,6 @@ class WorkspaceAutoGen(AutoGen):
         self.FvTargetList   = Fvs if Fvs else []\r
         self.CapTargetList  = Caps if Caps else []\r
         self.AutoGenObjectList = []\r
-        self._BuildDir      = None\r
-        self._FvDir         = None\r
-        self._MakeFileDir   = None\r
-        self._BuildCommand  = None\r
         self._GuidDict = {}\r
 \r
         # there's many relative directory operations, so ...\r
@@ -415,7 +468,7 @@ class WorkspaceAutoGen(AutoGen):
 \r
             # generate the SourcePcdDict and BinaryPcdDict\r
             PGen = PlatformAutoGen(self, self.MetaFile, Target, Toolchain, Arch)\r
-            for BuildData in PGen.BuildDatabase._CACHE_.values():\r
+            for BuildData in list(PGen.BuildDatabase._CACHE_.values()):\r
                 if BuildData.Arch != Arch:\r
                     continue\r
                 if BuildData.MetaFile.Ext == '.inf':\r
@@ -521,7 +574,7 @@ class WorkspaceAutoGen(AutoGen):
                                 if NewPcd2 not in GlobalData.MixedPcd[item]:\r
                                     GlobalData.MixedPcd[item].append(NewPcd2)\r
 \r
-            for BuildData in PGen.BuildDatabase._CACHE_.values():\r
+            for BuildData in list(PGen.BuildDatabase._CACHE_.values()):\r
                 if BuildData.Arch != Arch:\r
                     continue\r
                 for key in BuildData.Pcds:\r
@@ -573,8 +626,8 @@ class WorkspaceAutoGen(AutoGen):
                         'build',\r
                         PARSER_ERROR,\r
                         "PCD (%s.%s) used in FDF is not declared in DEC files." % (Guid, Name),\r
-                        File = self.FdfProfile.PcdFileLineDict[Name, Guid][0],\r
-                        Line = self.FdfProfile.PcdFileLineDict[Name, Guid][1]\r
+                        File = self.FdfProfile.PcdFileLineDict[Name, Guid, Fileds][0],\r
+                        Line = self.FdfProfile.PcdFileLineDict[Name, Guid, Fileds][1]\r
                     )\r
                 else:\r
                     # Check whether Dynamic or DynamicEx PCD used in FDF file. If used, build break and give a error message.\r
@@ -587,8 +640,8 @@ class WorkspaceAutoGen(AutoGen):
                                 'build',\r
                                 PARSER_ERROR,\r
                                 "Using Dynamic or DynamicEx type of PCD [%s.%s] in FDF file is not allowed." % (Guid, Name),\r
-                                File = self.FdfProfile.PcdFileLineDict[Name, Guid][0],\r
-                                Line = self.FdfProfile.PcdFileLineDict[Name, Guid][1]\r
+                                File = self.FdfProfile.PcdFileLineDict[Name, Guid, Fileds][0],\r
+                                Line = self.FdfProfile.PcdFileLineDict[Name, Guid, Fileds][1]\r
                         )\r
 \r
             Pa = PlatformAutoGen(self, self.MetaFile, Target, Toolchain, Arch)\r
@@ -602,7 +655,7 @@ class WorkspaceAutoGen(AutoGen):
             #\r
             # Generate Package level hash value\r
             #\r
-            GlobalData.gPackageHash[Arch] = {}\r
+            GlobalData.gPackageHash = {}\r
             if GlobalData.gUseHashCache:\r
                 for Pkg in Pkgs:\r
                     self._GenPkgLevelHash(Pkg)\r
@@ -622,17 +675,17 @@ class WorkspaceAutoGen(AutoGen):
         #\r
         content = 'gCommandLineDefines: '\r
         content += str(GlobalData.gCommandLineDefines)\r
-        content += os.linesep\r
+        content += TAB_LINE_BREAK\r
         content += 'BuildOptionPcd: '\r
         content += str(GlobalData.BuildOptionPcd)\r
-        content += os.linesep\r
+        content += TAB_LINE_BREAK\r
         content += 'Active Platform: '\r
         content += str(self.Platform)\r
-        content += os.linesep\r
+        content += TAB_LINE_BREAK\r
         if self.FdfFile:\r
             content += 'Flash Image Definition: '\r
             content += str(self.FdfFile)\r
-            content += os.linesep\r
+            content += TAB_LINE_BREAK\r
         SaveFileOnChange(os.path.join(self.BuildDir, 'BuildOptions'), content, False)\r
 \r
         #\r
@@ -642,7 +695,7 @@ class WorkspaceAutoGen(AutoGen):
         if Pa.PcdTokenNumber:\r
             if Pa.DynamicPcdList:\r
                 for Pcd in Pa.DynamicPcdList:\r
-                    PcdTokenNumber += os.linesep\r
+                    PcdTokenNumber += TAB_LINE_BREAK\r
                     PcdTokenNumber += str((Pcd.TokenCName, Pcd.TokenSpaceGuidCName))\r
                     PcdTokenNumber += ' : '\r
                     PcdTokenNumber += str(Pa.PcdTokenNumber[Pcd.TokenCName, Pcd.TokenSpaceGuidCName])\r
@@ -667,11 +720,11 @@ class WorkspaceAutoGen(AutoGen):
             for files in AllWorkSpaceMetaFiles:\r
                 if files.endswith('.dec'):\r
                     continue\r
-                f = open(files, 'r')\r
+                f = open(files, 'rb')\r
                 Content = f.read()\r
                 f.close()\r
                 m.update(Content)\r
-            SaveFileOnChange(os.path.join(self.BuildDir, 'AutoGen.hash'), m.hexdigest(), True)\r
+            SaveFileOnChange(os.path.join(self.BuildDir, 'AutoGen.hash'), m.hexdigest(), False)\r
             GlobalData.gPlatformHash = m.hexdigest()\r
 \r
         #\r
@@ -688,7 +741,7 @@ class WorkspaceAutoGen(AutoGen):
         return True\r
 \r
     def _GenPkgLevelHash(self, Pkg):\r
-        if Pkg.PackageName in GlobalData.gPackageHash[Pkg.Arch]:\r
+        if Pkg.PackageName in GlobalData.gPackageHash:\r
             return\r
 \r
         PkgDir = os.path.join(self.BuildDir, Pkg.Arch, Pkg.PackageName)\r
@@ -696,7 +749,7 @@ class WorkspaceAutoGen(AutoGen):
         HashFile = os.path.join(PkgDir, Pkg.PackageName + '.hash')\r
         m = hashlib.md5()\r
         # Get .dec file's hash value\r
-        f = open(Pkg.MetaFile.Path, 'r')\r
+        f = open(Pkg.MetaFile.Path, 'rb')\r
         Content = f.read()\r
         f.close()\r
         m.update(Content)\r
@@ -706,12 +759,12 @@ class WorkspaceAutoGen(AutoGen):
                 for Root, Dirs, Files in os.walk(str(inc)):\r
                     for File in sorted(Files):\r
                         File_Path = os.path.join(Root, File)\r
-                        f = open(File_Path, 'r')\r
+                        f = open(File_Path, 'rb')\r
                         Content = f.read()\r
                         f.close()\r
                         m.update(Content)\r
-        SaveFileOnChange(HashFile, m.hexdigest(), True)\r
-        GlobalData.gPackageHash[Pkg.Arch][Pkg.PackageName] = m.hexdigest()\r
+        SaveFileOnChange(HashFile, m.hexdigest(), False)\r
+        GlobalData.gPackageHash[Pkg.PackageName] = m.hexdigest()\r
 \r
     def _GetMetaFiles(self, Target, Toolchain, Arch):\r
         AllWorkSpaceMetaFiles = set()\r
@@ -810,54 +863,56 @@ class WorkspaceAutoGen(AutoGen):
         return "%s [%s]" % (self.MetaFile, ", ".join(self.ArchList))\r
 \r
     ## Return the directory to store FV files\r
-    def _GetFvDir(self):\r
-        if self._FvDir is None:\r
-            self._FvDir = path.join(self.BuildDir, TAB_FV_DIRECTORY)\r
-        return self._FvDir\r
+    @cached_property\r
+    def FvDir(self):\r
+        return path.join(self.BuildDir, TAB_FV_DIRECTORY)\r
 \r
     ## Return the directory to store all intermediate and final files built\r
-    def _GetBuildDir(self):\r
-        if self._BuildDir is None:\r
-            return self.AutoGenObjectList[0].BuildDir\r
+    @cached_property\r
+    def BuildDir(self):\r
+        return self.AutoGenObjectList[0].BuildDir\r
 \r
     ## Return the build output directory platform specifies\r
-    def _GetOutputDir(self):\r
+    @cached_property\r
+    def OutputDir(self):\r
         return self.Platform.OutputDirectory\r
 \r
     ## Return platform name\r
-    def _GetName(self):\r
+    @cached_property\r
+    def Name(self):\r
         return self.Platform.PlatformName\r
 \r
     ## Return meta-file GUID\r
-    def _GetGuid(self):\r
+    @cached_property\r
+    def Guid(self):\r
         return self.Platform.Guid\r
 \r
     ## Return platform version\r
-    def _GetVersion(self):\r
+    @cached_property\r
+    def Version(self):\r
         return self.Platform.Version\r
 \r
     ## Return paths of tools\r
-    def _GetToolDefinition(self):\r
+    @cached_property\r
+    def ToolDefinition(self):\r
         return self.AutoGenObjectList[0].ToolDefinition\r
 \r
     ## Return directory of platform makefile\r
     #\r
     #   @retval     string  Makefile directory\r
     #\r
-    def _GetMakeFileDir(self):\r
-        if self._MakeFileDir is None:\r
-            self._MakeFileDir = self.BuildDir\r
-        return self._MakeFileDir\r
+    @cached_property\r
+    def MakeFileDir(self):\r
+        return self.BuildDir\r
 \r
     ## Return build command string\r
     #\r
     #   @retval     string  Build command string\r
     #\r
-    def _GetBuildCommand(self):\r
-        if self._BuildCommand is None:\r
-            # BuildCommand should be all the same. So just get one from platform AutoGen\r
-            self._BuildCommand = self.AutoGenObjectList[0].BuildCommand\r
-        return self._BuildCommand\r
+    @cached_property\r
+    def BuildCommand(self):\r
+        # BuildCommand should be all the same. So just get one from platform AutoGen\r
+        return self.AutoGenObjectList[0].BuildCommand\r
 \r
     ## Check the PCDs token value conflict in each DEC file.\r
     #\r
@@ -868,7 +923,7 @@ class WorkspaceAutoGen(AutoGen):
     def _CheckAllPcdsTokenValueConflict(self):\r
         for Pa in self.AutoGenObjectList:\r
             for Package in Pa.PackageList:\r
-                PcdList = Package.Pcds.values()\r
+                PcdList = list(Package.Pcds.values())\r
                 PcdList.sort(key=lambda x: int(x.TokenValue, 0))\r
                 Count = 0\r
                 while (Count < len(PcdList) - 1) :\r
@@ -914,7 +969,7 @@ class WorkspaceAutoGen(AutoGen):
                         Count += SameTokenValuePcdListCount\r
                     Count += 1\r
 \r
-                PcdList = Package.Pcds.values()\r
+                PcdList = list(Package.Pcds.values())\r
                 PcdList.sort(key=lambda x: "%s.%s" % (x.TokenSpaceGuidCName, x.TokenCName))\r
                 Count = 0\r
                 while (Count < len(PcdList) - 1) :\r
@@ -933,9 +988,63 @@ class WorkspaceAutoGen(AutoGen):
                                     )\r
                     Count += 1\r
     ## Generate fds command\r
-    def _GenFdsCommand(self):\r
+    @property\r
+    def GenFdsCommand(self):\r
         return (GenMake.TopLevelMakefile(self)._TEMPLATE_.Replace(GenMake.TopLevelMakefile(self)._TemplateDict)).strip()\r
 \r
+    @property\r
+    def GenFdsCommandDict(self):\r
+        FdsCommandDict = {}\r
+        LogLevel = EdkLogger.GetLevel()\r
+        if LogLevel == EdkLogger.VERBOSE:\r
+            FdsCommandDict["verbose"] = True\r
+        elif LogLevel <= EdkLogger.DEBUG_9:\r
+            FdsCommandDict["debug"] = LogLevel - 1\r
+        elif LogLevel == EdkLogger.QUIET:\r
+            FdsCommandDict["quiet"] = True\r
+\r
+        if GlobalData.gEnableGenfdsMultiThread:\r
+            FdsCommandDict["GenfdsMultiThread"] = True\r
+        if GlobalData.gIgnoreSource:\r
+            FdsCommandDict["IgnoreSources"] = True\r
+\r
+        FdsCommandDict["OptionPcd"] = []\r
+        for pcd in GlobalData.BuildOptionPcd:\r
+            if pcd[2]:\r
+                pcdname = '.'.join(pcd[0:3])\r
+            else:\r
+                pcdname = '.'.join(pcd[0:2])\r
+            if pcd[3].startswith('{'):\r
+                FdsCommandDict["OptionPcd"].append(pcdname + '=' + 'H' + '"' + pcd[3] + '"')\r
+            else:\r
+                FdsCommandDict["OptionPcd"].append(pcdname + '=' + pcd[3])\r
+\r
+        MacroList = []\r
+        # macros passed to GenFds\r
+        MacroDict = {}\r
+        MacroDict.update(GlobalData.gGlobalDefines)\r
+        MacroDict.update(GlobalData.gCommandLineDefines)\r
+        for MacroName in MacroDict:\r
+            if MacroDict[MacroName] != "":\r
+                MacroList.append('"%s=%s"' % (MacroName, MacroDict[MacroName].replace('\\', '\\\\')))\r
+            else:\r
+                MacroList.append('"%s"' % MacroName)\r
+        FdsCommandDict["macro"] = MacroList\r
+\r
+        FdsCommandDict["fdf_file"] = [self.FdfFile]\r
+        FdsCommandDict["build_target"] = self.BuildTarget\r
+        FdsCommandDict["toolchain_tag"] = self.ToolChain\r
+        FdsCommandDict["active_platform"] = str(self)\r
+\r
+        FdsCommandDict["conf_directory"] = GlobalData.gConfDirectory\r
+        FdsCommandDict["build_architecture_list"] = ','.join(self.ArchList)\r
+        FdsCommandDict["platform_build_directory"] = self.BuildDir\r
+\r
+        FdsCommandDict["fd"] = self.FdTargetList\r
+        FdsCommandDict["fv"] = self.FvTargetList\r
+        FdsCommandDict["cap"] = self.CapTargetList\r
+        return FdsCommandDict\r
+\r
     ## Create makefile for the platform and modules in it\r
     #\r
     #   @param      CreateDepsMakeFile      Flag indicating if the makefile for\r
@@ -966,18 +1075,6 @@ class WorkspaceAutoGen(AutoGen):
     def CreateAsBuiltInf(self):\r
         return\r
 \r
-    Name                = property(_GetName)\r
-    Guid                = property(_GetGuid)\r
-    Version             = property(_GetVersion)\r
-    OutputDir           = property(_GetOutputDir)\r
-\r
-    ToolDefinition      = property(_GetToolDefinition)       # toolcode : tool path\r
-\r
-    BuildDir            = property(_GetBuildDir)\r
-    FvDir               = property(_GetFvDir)\r
-    MakeFileDir         = property(_GetMakeFileDir)\r
-    BuildCommand        = property(_GetBuildCommand)\r
-    GenFdsCommand       = property(_GenFdsCommand)\r
 \r
 ## AutoGen class for platform\r
 #\r
@@ -988,7 +1085,6 @@ class PlatformAutoGen(AutoGen):
     # call super().__init__ then call the worker function with different parameter count\r
     def __init__(self, Workspace, MetaFile, Target, Toolchain, Arch, *args, **kwargs):\r
         if not hasattr(self, "_Init"):\r
-            super(PlatformAutoGen, self).__init__(self, Workspace, MetaFile, Target, Toolchain, Arch, *args, **kwargs)\r
             self._InitWorker(Workspace, MetaFile, Target, Toolchain, Arch)\r
             self._Init = True\r
     #\r
@@ -1039,48 +1135,18 @@ class PlatformAutoGen(AutoGen):
         self.BuildTarget = Target\r
         self.Arch = Arch\r
         self.SourceDir = PlatformFile.SubDir\r
-        self.SourceOverrideDir = None\r
         self.FdTargetList = self.Workspace.FdTargetList\r
         self.FvTargetList = self.Workspace.FvTargetList\r
-        self.AllPcdList = []\r
         # get the original module/package/platform objects\r
         self.BuildDatabase = Workspace.BuildDatabase\r
         self.DscBuildDataObj = Workspace.Platform\r
-        self._GuidDict = Workspace._GuidDict\r
 \r
         # flag indicating if the makefile/C-code file has been created or not\r
         self.IsMakeFileCreated  = False\r
-        self.IsCodeFileCreated  = False\r
-\r
-        self._Platform   = None\r
-        self._Name       = None\r
-        self._Guid       = None\r
-        self._Version    = None\r
-\r
-        self._BuildRule = None\r
-        self._SourceDir = None\r
-        self._BuildDir = None\r
-        self._OutputDir = None\r
-        self._FvDir = None\r
-        self._MakeFileDir = None\r
-        self._FdfFile = None\r
-\r
-        self._PcdTokenNumber = None    # (TokenCName, TokenSpaceGuidCName) : GeneratedTokenNumber\r
+\r
         self._DynamicPcdList = None    # [(TokenCName1, TokenSpaceGuidCName1), (TokenCName2, TokenSpaceGuidCName2), ...]\r
         self._NonDynamicPcdList = None # [(TokenCName1, TokenSpaceGuidCName1), (TokenCName2, TokenSpaceGuidCName2), ...]\r
-        self._NonDynamicPcdDict = {}\r
-\r
-        self._ToolDefinitions = None\r
-        self._ToolDefFile = None          # toolcode : tool path\r
-        self._ToolChainFamily = None\r
-        self._BuildRuleFamily = None\r
-        self._BuildOption = None          # toolcode : option\r
-        self._EdkBuildOption = None       # edktoolcode : option\r
-        self._EdkIIBuildOption = None     # edkiitoolcode : option\r
-        self._PackageList = None\r
-        self._ModuleAutoGenList  = None\r
-        self._LibraryAutoGenList = None\r
-        self._BuildCommand = None\r
+\r
         self._AsBuildInfList = []\r
         self._AsBuildModuleList = []\r
 \r
@@ -1100,6 +1166,7 @@ class PlatformAutoGen(AutoGen):
 \r
         return True\r
 \r
+    @cached_class_function\r
     def __repr__(self):\r
         return "%s [%s]" % (self.MetaFile, self.Arch)\r
 \r
@@ -1111,36 +1178,33 @@ class PlatformAutoGen(AutoGen):
     #   @param      CreateModuleCodeFile    Flag indicating if creating module's\r
     #                                       autogen code file or not\r
     #\r
+    @cached_class_function\r
     def CreateCodeFile(self, CreateModuleCodeFile=False):\r
-        # only module has code to be greated, so do nothing if CreateModuleCodeFile is False\r
-        if self.IsCodeFileCreated or not CreateModuleCodeFile:\r
+        # only module has code to be created, so do nothing if CreateModuleCodeFile is False\r
+        if not CreateModuleCodeFile:\r
             return\r
 \r
         for Ma in self.ModuleAutoGenList:\r
             Ma.CreateCodeFile(True)\r
 \r
-        # don't do this twice\r
-        self.IsCodeFileCreated = True\r
-\r
     ## Generate Fds Command\r
-    def _GenFdsCommand(self):\r
+    @cached_property\r
+    def GenFdsCommand(self):\r
         return self.Workspace.GenFdsCommand\r
 \r
-    ## Create makefile for the platform and mdoules in it\r
+    ## Create makefile for the platform and modules in it\r
     #\r
     #   @param      CreateModuleMakeFile    Flag indicating if the makefile for\r
     #                                       modules will be created as well\r
     #\r
     def CreateMakeFile(self, CreateModuleMakeFile=False, FfsCommand = {}):\r
         if CreateModuleMakeFile:\r
-            for ModuleFile in self.Platform.Modules:\r
-                Ma = ModuleAutoGen(self.Workspace, ModuleFile, self.BuildTarget,\r
-                                   self.ToolChain, self.Arch, self.MetaFile)\r
-                if (ModuleFile.File, self.Arch) in FfsCommand:\r
-                    Ma.CreateMakeFile(True, FfsCommand[ModuleFile.File, self.Arch])\r
+            for Ma in self._MaList:\r
+                key = (Ma.MetaFile.File, self.Arch)\r
+                if key in FfsCommand:\r
+                    Ma.CreateMakeFile(True, FfsCommand[key])\r
                 else:\r
                     Ma.CreateMakeFile(True)\r
-                #Ma.CreateAsBuiltInf()\r
 \r
         # no need to create makefile for the platform more than once\r
         if self.IsMakeFileCreated:\r
@@ -1153,6 +1217,9 @@ class PlatformAutoGen(AutoGen):
 \r
         self.IsMakeFileCreated = True\r
 \r
+    @property\r
+    def AllPcdList(self):\r
+        return self.DynamicPcdList + self.NonDynamicPcdList\r
     ## Deal with Shared FixedAtBuild Pcds\r
     #\r
     def CollectFixedAtBuildPcds(self):\r
@@ -1185,7 +1252,6 @@ class PlatformAutoGen(AutoGen):
                     LibAuto.ConstPcd[key] = FixedAtBuildPcds[key]\r
 \r
     def CollectVariables(self, DynamicPcdSet):\r
-\r
         VpdRegionSize = 0\r
         VpdRegionBase = 0\r
         if self.Workspace.FdfFile:\r
@@ -1197,8 +1263,7 @@ class PlatformAutoGen(AutoGen):
                         VpdRegionBase = FdRegion.Offset\r
                         break\r
 \r
-\r
-        VariableInfo = VariableMgr(self.DscBuildDataObj._GetDefaultStores(), self.DscBuildDataObj._GetSkuIds())\r
+        VariableInfo = VariableMgr(self.DscBuildDataObj._GetDefaultStores(), self.DscBuildDataObj.SkuIds)\r
         VariableInfo.SetVpdRegionMaxSize(VpdRegionSize)\r
         VariableInfo.SetVpdRegionOffset(VpdRegionBase)\r
         Index = 0\r
@@ -1210,10 +1275,12 @@ class PlatformAutoGen(AutoGen):
                 if SkuId is None or SkuId == '':\r
                     continue\r
                 if len(Sku.VariableName) > 0:\r
+                    if Sku.VariableAttribute and 'NV' not in Sku.VariableAttribute:\r
+                        continue\r
                     VariableGuidStructure = Sku.VariableGuidValue\r
                     VariableGuid = GuidStructureStringToGuidString(VariableGuidStructure)\r
                     for StorageName in Sku.DefaultStoreDict:\r
-                        VariableInfo.append_variable(var_info(Index, pcdname, StorageName, SkuName, StringToArray(Sku.VariableName), VariableGuid, Sku.VariableOffset, Sku.VariableAttribute, Sku.HiiDefaultValue, Sku.DefaultStoreDict[StorageName], Pcd.DatumType))\r
+                        VariableInfo.append_variable(var_info(Index, pcdname, StorageName, SkuName, StringToArray(Sku.VariableName), VariableGuid, Sku.VariableOffset, Sku.VariableAttribute, Sku.HiiDefaultValue, Sku.DefaultStoreDict[StorageName] if Pcd.DatumType in TAB_PCD_NUMERIC_TYPES else StringToArray(Sku.DefaultStoreDict[StorageName]), Pcd.DatumType, Pcd.CustomAttribute['DscPosition'], Pcd.CustomAttribute.get('IsStru',False)))\r
             Index += 1\r
         return VariableInfo\r
 \r
@@ -1226,7 +1293,7 @@ class PlatformAutoGen(AutoGen):
                 if os.path.exists(VpdMapFilePath):\r
                     OrgVpdFile.Read(VpdMapFilePath)\r
                     PcdItems = OrgVpdFile.GetOffset(PcdNvStoreDfBuffer[0])\r
-                    NvStoreOffset = PcdItems.values()[0].strip() if PcdItems else '0'\r
+                    NvStoreOffset = list(PcdItems.values())[0].strip() if PcdItems else '0'\r
                 else:\r
                     EdkLogger.error("build", FILE_READ_FAILURE, "Can not find VPD map file %s to fix up VPD offset." % VpdMapFilePath)\r
 \r
@@ -1250,7 +1317,6 @@ class PlatformAutoGen(AutoGen):
     #  This interface should be invoked explicitly when platform action is created.\r
     #\r
     def CollectPlatformDynamicPcds(self):\r
-\r
         for key in self.Platform.Pcds:\r
             for SinglePcd in GlobalData.MixedPcd:\r
                 if (self.Platform.Pcds[key].TokenCName, self.Platform.Pcds[key].TokenSpaceGuidCName) == SinglePcd:\r
@@ -1275,16 +1341,12 @@ class PlatformAutoGen(AutoGen):
         for InfName in self._AsBuildInfList:\r
             InfName = mws.join(self.WorkspaceDir, InfName)\r
             FdfModuleList.append(os.path.normpath(InfName))\r
-        for F in self.Platform.Modules.keys():\r
-            M = ModuleAutoGen(self.Workspace, F, self.BuildTarget, self.ToolChain, self.Arch, self.MetaFile)\r
-            #GuidValue.update(M.Guids)\r
-\r
-            self.Platform.Modules[F].M = M\r
-\r
+        for M in self._MaList:\r
+#            F is the Module for which M is the module autogen\r
             for PcdFromModule in M.ModulePcdList + M.LibraryPcdList:\r
                 # make sure that the "VOID*" kind of datum has MaxDatumSize set\r
                 if PcdFromModule.DatumType == TAB_VOID and not PcdFromModule.MaxDatumSize:\r
-                    NoDatumTypePcdList.add("%s.%s [%s]" % (PcdFromModule.TokenSpaceGuidCName, PcdFromModule.TokenCName, F))\r
+                    NoDatumTypePcdList.add("%s.%s [%s]" % (PcdFromModule.TokenSpaceGuidCName, PcdFromModule.TokenCName, M.MetaFile))\r
 \r
                 # Check the PCD from Binary INF or Source INF\r
                 if M.IsBinaryModule == True:\r
@@ -1294,7 +1356,7 @@ class PlatformAutoGen(AutoGen):
                 PcdFromModule.IsFromDsc = (PcdFromModule.TokenCName, PcdFromModule.TokenSpaceGuidCName) in self.Platform.Pcds\r
 \r
                 if PcdFromModule.Type in PCD_DYNAMIC_TYPE_SET or PcdFromModule.Type in PCD_DYNAMIC_EX_TYPE_SET:\r
-                    if F.Path not in FdfModuleList:\r
+                    if M.MetaFile.Path not in FdfModuleList:\r
                         # If one of the Source built modules listed in the DSC is not listed\r
                         # in FDF modules, and the INF lists a PCD can only use the PcdsDynamic\r
                         # access method (it is only listed in the DEC file that declares the\r
@@ -1430,7 +1492,7 @@ class PlatformAutoGen(AutoGen):
         if (self.Workspace.ArchList[-1] == self.Arch):\r
             for Pcd in self._DynamicPcdList:\r
                 # just pick the a value to determine whether is unicode string type\r
-                Sku = Pcd.SkuInfoList.values()[0]\r
+                Sku = Pcd.SkuInfoList.get(TAB_DEFAULT)\r
                 Sku.VpdOffset = Sku.VpdOffset.strip()\r
 \r
                 if Pcd.DatumType not in [TAB_UINT8, TAB_UINT16, TAB_UINT32, TAB_UINT64, TAB_VOID, "BOOLEAN"]:\r
@@ -1447,11 +1509,21 @@ class PlatformAutoGen(AutoGen):
                 self.VariableInfo = self.CollectVariables(self._DynamicPcdList)\r
                 vardump = self.VariableInfo.dump()\r
                 if vardump:\r
+                    #\r
+                    #According to PCD_DATABASE_INIT in edk2\MdeModulePkg\Include\Guid\PcdDataBaseSignatureGuid.h,\r
+                    #the max size for string PCD should not exceed USHRT_MAX 65535(0xffff).\r
+                    #typedef UINT16 SIZE_INFO;\r
+                    #//SIZE_INFO  SizeTable[];\r
+                    if len(vardump.split(",")) > 0xffff:\r
+                        EdkLogger.error("build", RESOURCE_OVERFLOW, 'The current length of PCD %s value is %d, it exceeds to the max size of String PCD.' %(".".join([PcdNvStoreDfBuffer.TokenSpaceGuidCName,PcdNvStoreDfBuffer.TokenCName]) ,len(vardump.split(","))))\r
                     PcdNvStoreDfBuffer.DefaultValue = vardump\r
                     for skuname in PcdNvStoreDfBuffer.SkuInfoList:\r
                         PcdNvStoreDfBuffer.SkuInfoList[skuname].DefaultValue = vardump\r
                         PcdNvStoreDfBuffer.MaxDatumSize = str(len(vardump.split(",")))\r
-\r
+            else:\r
+                #If the end user define [DefaultStores] and [XXX.Menufacturing] in DSC, but forget to configure PcdNvStoreDefaultValueBuffer to PcdsDynamicVpd\r
+                if [Pcd for Pcd in self._DynamicPcdList if Pcd.UserDefinedDefaultStoresFlag]:\r
+                    EdkLogger.warn("build", "PcdNvStoreDefaultValueBuffer should be defined as PcdsDynamicExVpd in dsc file since the DefaultStores is enabled for this platform.\n%s" %self.Platform.MetaFile.Path)\r
             PlatformPcds = sorted(self._PlatformPcds.keys())\r
             #\r
             # Add VPD type PCD into VpdFile and determine whether the VPD PCD need to be fixed up.\r
@@ -1476,7 +1548,7 @@ class PlatformAutoGen(AutoGen):
                         PcdValue = Sku.DefaultValue\r
                         if PcdValue == "":\r
                             PcdValue  = Pcd.DefaultValue\r
-                        if Sku.VpdOffset != '*':\r
+                        if Sku.VpdOffset != TAB_STAR:\r
                             if PcdValue.startswith("{"):\r
                                 Alignment = 8\r
                             elif PcdValue.startswith("L"):\r
@@ -1500,7 +1572,7 @@ class PlatformAutoGen(AutoGen):
                             VpdFile.Add(Pcd, SkuName, Sku.VpdOffset)\r
                         SkuValueMap[PcdValue].append(Sku)\r
                         # if the offset of a VPD is *, then it need to be fixed up by third party tool.\r
-                        if not NeedProcessVpdMapFile and Sku.VpdOffset == "*":\r
+                        if not NeedProcessVpdMapFile and Sku.VpdOffset == TAB_STAR:\r
                             NeedProcessVpdMapFile = True\r
                             if self.Platform.VpdToolGuid is None or self.Platform.VpdToolGuid == '':\r
                                 EdkLogger.error("Build", FILE_NOT_FOUND, \\r
@@ -1526,7 +1598,7 @@ class PlatformAutoGen(AutoGen):
                         if not FoundFlag :\r
                             # just pick the a value to determine whether is unicode string type\r
                             SkuValueMap = {}\r
-                            SkuObjList = DscPcdEntry.SkuInfoList.items()\r
+                            SkuObjList = list(DscPcdEntry.SkuInfoList.items())\r
                             DefaultSku = DscPcdEntry.SkuInfoList.get(TAB_DEFAULT)\r
                             if DefaultSku:\r
                                 defaultindex = SkuObjList.index((TAB_DEFAULT, DefaultSku))\r
@@ -1552,7 +1624,7 @@ class PlatformAutoGen(AutoGen):
                                             DscPcdEntry.TokenSpaceGuidValue = eachDec.Guids[DecPcdEntry.TokenSpaceGuidCName]\r
                                             # Only fix the value while no value provided in DSC file.\r
                                             if not Sku.DefaultValue:\r
-                                                DscPcdEntry.SkuInfoList[DscPcdEntry.SkuInfoList.keys()[0]].DefaultValue = DecPcdEntry.DefaultValue\r
+                                                DscPcdEntry.SkuInfoList[list(DscPcdEntry.SkuInfoList.keys())[0]].DefaultValue = DecPcdEntry.DefaultValue\r
 \r
                                 if DscPcdEntry not in self._DynamicPcdList:\r
                                     self._DynamicPcdList.append(DscPcdEntry)\r
@@ -1560,7 +1632,7 @@ class PlatformAutoGen(AutoGen):
                                 PcdValue = Sku.DefaultValue\r
                                 if PcdValue == "":\r
                                     PcdValue  = DscPcdEntry.DefaultValue\r
-                                if Sku.VpdOffset != '*':\r
+                                if Sku.VpdOffset != TAB_STAR:\r
                                     if PcdValue.startswith("{"):\r
                                         Alignment = 8\r
                                     elif PcdValue.startswith("L"):\r
@@ -1583,7 +1655,7 @@ class PlatformAutoGen(AutoGen):
                                     SkuValueMap[PcdValue] = []\r
                                     VpdFile.Add(DscPcdEntry, SkuName, Sku.VpdOffset)\r
                                 SkuValueMap[PcdValue].append(Sku)\r
-                                if not NeedProcessVpdMapFile and Sku.VpdOffset == "*":\r
+                                if not NeedProcessVpdMapFile and Sku.VpdOffset == TAB_STAR:\r
                                     NeedProcessVpdMapFile = True\r
                             if DscPcdEntry.DatumType == TAB_VOID and PcdValue.startswith("L"):\r
                                 UnicodePcdArray.add(DscPcdEntry)\r
@@ -1604,6 +1676,12 @@ class PlatformAutoGen(AutoGen):
                 self.FixVpdOffset(VpdFile)\r
 \r
                 self.FixVpdOffset(self.UpdateNVStoreMaxSize(VpdFile))\r
+                PcdNvStoreDfBuffer = [item for item in self._DynamicPcdList if item.TokenCName == "PcdNvStoreDefaultValueBuffer" and item.TokenSpaceGuidCName == "gEfiMdeModulePkgTokenSpaceGuid"]\r
+                if PcdNvStoreDfBuffer:\r
+                    PcdName,PcdGuid = PcdNvStoreDfBuffer[0].TokenCName, PcdNvStoreDfBuffer[0].TokenSpaceGuidCName\r
+                    if (PcdName,PcdGuid) in VpdSkuMap:\r
+                        DefaultSku = PcdNvStoreDfBuffer[0].SkuInfoList.get(TAB_DEFAULT)\r
+                        VpdSkuMap[(PcdName,PcdGuid)] = {DefaultSku.DefaultValue:[SkuObj for SkuObj in PcdNvStoreDfBuffer[0].SkuInfoList.values() ]}\r
 \r
                 # Process VPD map file generated by third party BPDG tool\r
                 if NeedProcessVpdMapFile:\r
@@ -1611,7 +1689,7 @@ class PlatformAutoGen(AutoGen):
                     if os.path.exists(VpdMapFilePath):\r
                         VpdFile.Read(VpdMapFilePath)\r
 \r
-                        # Fixup "*" offset\r
+                        # Fixup TAB_STAR offset\r
                         for pcd in VpdSkuMap:\r
                             vpdinfo = VpdFile.GetVpdInfo(pcd)\r
                             if vpdinfo is None:\r
@@ -1628,7 +1706,7 @@ class PlatformAutoGen(AutoGen):
             # Delete the DynamicPcdList At the last time enter into this function\r
             for Pcd in self._DynamicPcdList:\r
                 # just pick the a value to determine whether is unicode string type\r
-                Sku = Pcd.SkuInfoList.values()[0]\r
+                Sku = Pcd.SkuInfoList.get(TAB_DEFAULT)\r
                 Sku.VpdOffset = Sku.VpdOffset.strip()\r
 \r
                 if Pcd.DatumType not in [TAB_UINT8, TAB_UINT16, TAB_UINT32, TAB_UINT64, TAB_VOID, "BOOLEAN"]:\r
@@ -1651,11 +1729,11 @@ class PlatformAutoGen(AutoGen):
         for pcd in self._DynamicPcdList:\r
             if len(pcd.SkuInfoList) == 1:\r
                 for (SkuName, SkuId) in allskuset:\r
-                    if type(SkuId) in (str, unicode) and eval(SkuId) == 0 or SkuId == 0:\r
+                    if isinstance(SkuId, str) and eval(SkuId) == 0 or SkuId == 0:\r
                         continue\r
                     pcd.SkuInfoList[SkuName] = copy.deepcopy(pcd.SkuInfoList[TAB_DEFAULT])\r
                     pcd.SkuInfoList[SkuName].SkuId = SkuId\r
-        self.AllPcdList = self._NonDynamicPcdList + self._DynamicPcdList\r
+                    pcd.SkuInfoList[SkuName].SkuIdName = SkuName\r
 \r
     def FixVpdOffset(self, VpdFile ):\r
         FvPath = os.path.join(self.BuildDir, TAB_FV_DIRECTORY)\r
@@ -1683,336 +1761,333 @@ class PlatformAutoGen(AutoGen):
                 EdkLogger.error("Build", FILE_NOT_FOUND, "Fail to find third-party BPDG tool to process VPD PCDs. BPDG Guid tool need to be defined in tools_def.txt and VPD_TOOL_GUID need to be provided in DSC file.")\r
 \r
     ## Return the platform build data object\r
-    def _GetPlatform(self):\r
-        if self._Platform is None:\r
-            self._Platform = self.BuildDatabase[self.MetaFile, self.Arch, self.BuildTarget, self.ToolChain]\r
-        return self._Platform\r
+    @cached_property\r
+    def Platform(self):\r
+        return self.BuildDatabase[self.MetaFile, self.Arch, self.BuildTarget, self.ToolChain]\r
 \r
     ## Return platform name\r
-    def _GetName(self):\r
+    @cached_property\r
+    def Name(self):\r
         return self.Platform.PlatformName\r
 \r
     ## Return the meta file GUID\r
-    def _GetGuid(self):\r
+    @cached_property\r
+    def Guid(self):\r
         return self.Platform.Guid\r
 \r
     ## Return the platform version\r
-    def _GetVersion(self):\r
+    @cached_property\r
+    def Version(self):\r
         return self.Platform.Version\r
 \r
     ## Return the FDF file name\r
-    def _GetFdfFile(self):\r
-        if self._FdfFile is None:\r
-            if self.Workspace.FdfFile != "":\r
-                self._FdfFile= mws.join(self.WorkspaceDir, self.Workspace.FdfFile)\r
-            else:\r
-                self._FdfFile = ''\r
-        return self._FdfFile\r
+    @cached_property\r
+    def FdfFile(self):\r
+        if self.Workspace.FdfFile:\r
+            RetVal= mws.join(self.WorkspaceDir, self.Workspace.FdfFile)\r
+        else:\r
+            RetVal = ''\r
+        return RetVal\r
 \r
     ## Return the build output directory platform specifies\r
-    def _GetOutputDir(self):\r
+    @cached_property\r
+    def OutputDir(self):\r
         return self.Platform.OutputDirectory\r
 \r
     ## Return the directory to store all intermediate and final files built\r
-    def _GetBuildDir(self):\r
-        if self._BuildDir is None:\r
-            if os.path.isabs(self.OutputDir):\r
-                self._BuildDir = path.join(\r
-                                            path.abspath(self.OutputDir),\r
-                                            self.BuildTarget + "_" + self.ToolChain,\r
-                                            )\r
-            else:\r
-                self._BuildDir = path.join(\r
-                                            self.WorkspaceDir,\r
-                                            self.OutputDir,\r
-                                            self.BuildTarget + "_" + self.ToolChain,\r
-                                            )\r
-            GlobalData.gBuildDirectory = self._BuildDir\r
-        return self._BuildDir\r
+    @cached_property\r
+    def BuildDir(self):\r
+        if os.path.isabs(self.OutputDir):\r
+            GlobalData.gBuildDirectory = RetVal = path.join(\r
+                                        path.abspath(self.OutputDir),\r
+                                        self.BuildTarget + "_" + self.ToolChain,\r
+                                        )\r
+        else:\r
+            GlobalData.gBuildDirectory = RetVal = path.join(\r
+                                        self.WorkspaceDir,\r
+                                        self.OutputDir,\r
+                                        self.BuildTarget + "_" + self.ToolChain,\r
+                                        )\r
+        return RetVal\r
 \r
     ## Return directory of platform makefile\r
     #\r
     #   @retval     string  Makefile directory\r
     #\r
-    def _GetMakeFileDir(self):\r
-        if self._MakeFileDir is None:\r
-            self._MakeFileDir = path.join(self.BuildDir, self.Arch)\r
-        return self._MakeFileDir\r
+    @cached_property\r
+    def MakeFileDir(self):\r
+        return path.join(self.BuildDir, self.Arch)\r
 \r
     ## Return build command string\r
     #\r
     #   @retval     string  Build command string\r
     #\r
-    def _GetBuildCommand(self):\r
-        if self._BuildCommand is None:\r
-            self._BuildCommand = []\r
-            if "MAKE" in self.ToolDefinition and "PATH" in self.ToolDefinition["MAKE"]:\r
-                self._BuildCommand += SplitOption(self.ToolDefinition["MAKE"]["PATH"])\r
-                if "FLAGS" in self.ToolDefinition["MAKE"]:\r
-                    NewOption = self.ToolDefinition["MAKE"]["FLAGS"].strip()\r
-                    if NewOption != '':\r
-                        self._BuildCommand += SplitOption(NewOption)\r
-                if "MAKE" in self.EdkIIBuildOption:\r
-                    if "FLAGS" in self.EdkIIBuildOption["MAKE"]:\r
-                        Flags = self.EdkIIBuildOption["MAKE"]["FLAGS"]\r
-                        if Flags.startswith('='):\r
-                            self._BuildCommand = [self._BuildCommand[0]] + [Flags[1:]]\r
-                        else:\r
-                            self._BuildCommand.append(Flags)\r
-        return self._BuildCommand\r
+    @cached_property\r
+    def BuildCommand(self):\r
+        RetVal = []\r
+        if "MAKE" in self.ToolDefinition and "PATH" in self.ToolDefinition["MAKE"]:\r
+            RetVal += _SplitOption(self.ToolDefinition["MAKE"]["PATH"])\r
+            if "FLAGS" in self.ToolDefinition["MAKE"]:\r
+                NewOption = self.ToolDefinition["MAKE"]["FLAGS"].strip()\r
+                if NewOption != '':\r
+                    RetVal += _SplitOption(NewOption)\r
+            if "MAKE" in self.EdkIIBuildOption:\r
+                if "FLAGS" in self.EdkIIBuildOption["MAKE"]:\r
+                    Flags = self.EdkIIBuildOption["MAKE"]["FLAGS"]\r
+                    if Flags.startswith('='):\r
+                        RetVal = [RetVal[0]] + [Flags[1:]]\r
+                    else:\r
+                        RetVal.append(Flags)\r
+        return RetVal\r
 \r
     ## Get tool chain definition\r
     #\r
-    #  Get each tool defition for given tool chain from tools_def.txt and platform\r
+    #  Get each tool definition for given tool chain from tools_def.txt and platform\r
     #\r
-    def _GetToolDefinition(self):\r
-        if self._ToolDefinitions is None:\r
-            ToolDefinition = self.Workspace.ToolDef.ToolsDefTxtDictionary\r
-            if TAB_TOD_DEFINES_COMMAND_TYPE not in self.Workspace.ToolDef.ToolsDefTxtDatabase:\r
-                EdkLogger.error('build', RESOURCE_NOT_AVAILABLE, "No tools found in configuration",\r
-                                ExtraData="[%s]" % self.MetaFile)\r
-            self._ToolDefinitions = {}\r
-            DllPathList = set()\r
-            for Def in ToolDefinition:\r
-                Target, Tag, Arch, Tool, Attr = Def.split("_")\r
-                if Target != self.BuildTarget or Tag != self.ToolChain or Arch != self.Arch:\r
-                    continue\r
+    @cached_property\r
+    def ToolDefinition(self):\r
+        ToolDefinition = self.Workspace.ToolDef.ToolsDefTxtDictionary\r
+        if TAB_TOD_DEFINES_COMMAND_TYPE not in self.Workspace.ToolDef.ToolsDefTxtDatabase:\r
+            EdkLogger.error('build', RESOURCE_NOT_AVAILABLE, "No tools found in configuration",\r
+                            ExtraData="[%s]" % self.MetaFile)\r
+        RetVal = {}\r
+        DllPathList = set()\r
+        for Def in ToolDefinition:\r
+            Target, Tag, Arch, Tool, Attr = Def.split("_")\r
+            if Target != self.BuildTarget or Tag != self.ToolChain or Arch != self.Arch:\r
+                continue\r
 \r
-                Value = ToolDefinition[Def]\r
-                # don't record the DLL\r
-                if Attr == "DLL":\r
-                    DllPathList.add(Value)\r
-                    continue\r
+            Value = ToolDefinition[Def]\r
+            # don't record the DLL\r
+            if Attr == "DLL":\r
+                DllPathList.add(Value)\r
+                continue\r
 \r
-                if Tool not in self._ToolDefinitions:\r
-                    self._ToolDefinitions[Tool] = {}\r
-                self._ToolDefinitions[Tool][Attr] = Value\r
-\r
-            ToolsDef = ''\r
-            if GlobalData.gOptions.SilentMode and "MAKE" in self._ToolDefinitions:\r
-                if "FLAGS" not in self._ToolDefinitions["MAKE"]:\r
-                    self._ToolDefinitions["MAKE"]["FLAGS"] = ""\r
-                self._ToolDefinitions["MAKE"]["FLAGS"] += " -s"\r
-            MakeFlags = ''\r
-            for Tool in self._ToolDefinitions:\r
-                for Attr in self._ToolDefinitions[Tool]:\r
-                    Value = self._ToolDefinitions[Tool][Attr]\r
-                    if Tool in self.BuildOption and Attr in self.BuildOption[Tool]:\r
-                        # check if override is indicated\r
-                        if self.BuildOption[Tool][Attr].startswith('='):\r
-                            Value = self.BuildOption[Tool][Attr][1:]\r
-                        else:\r
-                            if Attr != 'PATH':\r
-                                Value += " " + self.BuildOption[Tool][Attr]\r
-                            else:\r
-                                Value = self.BuildOption[Tool][Attr]\r
-\r
-                    if Attr == "PATH":\r
-                        # Don't put MAKE definition in the file\r
-                        if Tool != "MAKE":\r
-                            ToolsDef += "%s = %s\n" % (Tool, Value)\r
-                    elif Attr != "DLL":\r
-                        # Don't put MAKE definition in the file\r
-                        if Tool == "MAKE":\r
-                            if Attr == "FLAGS":\r
-                                MakeFlags = Value\r
+            if Tool not in RetVal:\r
+                RetVal[Tool] = {}\r
+            RetVal[Tool][Attr] = Value\r
+\r
+        ToolsDef = ''\r
+        if GlobalData.gOptions.SilentMode and "MAKE" in RetVal:\r
+            if "FLAGS" not in RetVal["MAKE"]:\r
+                RetVal["MAKE"]["FLAGS"] = ""\r
+            RetVal["MAKE"]["FLAGS"] += " -s"\r
+        MakeFlags = ''\r
+        for Tool in RetVal:\r
+            for Attr in RetVal[Tool]:\r
+                Value = RetVal[Tool][Attr]\r
+                if Tool in self._BuildOptionWithToolDef(RetVal) and Attr in self._BuildOptionWithToolDef(RetVal)[Tool]:\r
+                    # check if override is indicated\r
+                    if self._BuildOptionWithToolDef(RetVal)[Tool][Attr].startswith('='):\r
+                        Value = self._BuildOptionWithToolDef(RetVal)[Tool][Attr][1:]\r
+                    else:\r
+                        if Attr != 'PATH':\r
+                            Value += " " + self._BuildOptionWithToolDef(RetVal)[Tool][Attr]\r
                         else:\r
-                            ToolsDef += "%s_%s = %s\n" % (Tool, Attr, Value)\r
-                ToolsDef += "\n"\r
+                            Value = self._BuildOptionWithToolDef(RetVal)[Tool][Attr]\r
+\r
+                if Attr == "PATH":\r
+                    # Don't put MAKE definition in the file\r
+                    if Tool != "MAKE":\r
+                        ToolsDef += "%s = %s\n" % (Tool, Value)\r
+                elif Attr != "DLL":\r
+                    # Don't put MAKE definition in the file\r
+                    if Tool == "MAKE":\r
+                        if Attr == "FLAGS":\r
+                            MakeFlags = Value\r
+                    else:\r
+                        ToolsDef += "%s_%s = %s\n" % (Tool, Attr, Value)\r
+            ToolsDef += "\n"\r
 \r
-            SaveFileOnChange(self.ToolDefinitionFile, ToolsDef)\r
-            for DllPath in DllPathList:\r
-                os.environ["PATH"] = DllPath + os.pathsep + os.environ["PATH"]\r
-            os.environ["MAKE_FLAGS"] = MakeFlags\r
+        SaveFileOnChange(self.ToolDefinitionFile, ToolsDef, False)\r
+        for DllPath in DllPathList:\r
+            os.environ["PATH"] = DllPath + os.pathsep + os.environ["PATH"]\r
+        os.environ["MAKE_FLAGS"] = MakeFlags\r
 \r
-        return self._ToolDefinitions\r
+        return RetVal\r
 \r
     ## Return the paths of tools\r
-    def _GetToolDefFile(self):\r
-        if self._ToolDefFile is None:\r
-            self._ToolDefFile = os.path.join(self.MakeFileDir, "TOOLS_DEF." + self.Arch)\r
-        return self._ToolDefFile\r
+    @cached_property\r
+    def ToolDefinitionFile(self):\r
+        return os.path.join(self.MakeFileDir, "TOOLS_DEF." + self.Arch)\r
 \r
     ## Retrieve the toolchain family of given toolchain tag. Default to 'MSFT'.\r
-    def _GetToolChainFamily(self):\r
-        if self._ToolChainFamily is None:\r
-            ToolDefinition = self.Workspace.ToolDef.ToolsDefTxtDatabase\r
-            if TAB_TOD_DEFINES_FAMILY not in ToolDefinition \\r
-               or self.ToolChain not in ToolDefinition[TAB_TOD_DEFINES_FAMILY] \\r
-               or not ToolDefinition[TAB_TOD_DEFINES_FAMILY][self.ToolChain]:\r
-                EdkLogger.verbose("No tool chain family found in configuration for %s. Default to MSFT." \\r
-                                   % self.ToolChain)\r
-                self._ToolChainFamily = TAB_COMPILER_MSFT\r
-            else:\r
-                self._ToolChainFamily = ToolDefinition[TAB_TOD_DEFINES_FAMILY][self.ToolChain]\r
-        return self._ToolChainFamily\r
-\r
-    def _GetBuildRuleFamily(self):\r
-        if self._BuildRuleFamily is None:\r
-            ToolDefinition = self.Workspace.ToolDef.ToolsDefTxtDatabase\r
-            if TAB_TOD_DEFINES_BUILDRULEFAMILY not in ToolDefinition \\r
-               or self.ToolChain not in ToolDefinition[TAB_TOD_DEFINES_BUILDRULEFAMILY] \\r
-               or not ToolDefinition[TAB_TOD_DEFINES_BUILDRULEFAMILY][self.ToolChain]:\r
-                EdkLogger.verbose("No tool chain family found in configuration for %s. Default to MSFT." \\r
-                                   % self.ToolChain)\r
-                self._BuildRuleFamily = TAB_COMPILER_MSFT\r
-            else:\r
-                self._BuildRuleFamily = ToolDefinition[TAB_TOD_DEFINES_BUILDRULEFAMILY][self.ToolChain]\r
-        return self._BuildRuleFamily\r
+    @cached_property\r
+    def ToolChainFamily(self):\r
+        ToolDefinition = self.Workspace.ToolDef.ToolsDefTxtDatabase\r
+        if TAB_TOD_DEFINES_FAMILY not in ToolDefinition \\r
+           or self.ToolChain not in ToolDefinition[TAB_TOD_DEFINES_FAMILY] \\r
+           or not ToolDefinition[TAB_TOD_DEFINES_FAMILY][self.ToolChain]:\r
+            EdkLogger.verbose("No tool chain family found in configuration for %s. Default to MSFT." \\r
+                               % self.ToolChain)\r
+            RetVal = TAB_COMPILER_MSFT\r
+        else:\r
+            RetVal = ToolDefinition[TAB_TOD_DEFINES_FAMILY][self.ToolChain]\r
+        return RetVal\r
+\r
+    @cached_property\r
+    def BuildRuleFamily(self):\r
+        ToolDefinition = self.Workspace.ToolDef.ToolsDefTxtDatabase\r
+        if TAB_TOD_DEFINES_BUILDRULEFAMILY not in ToolDefinition \\r
+           or self.ToolChain not in ToolDefinition[TAB_TOD_DEFINES_BUILDRULEFAMILY] \\r
+           or not ToolDefinition[TAB_TOD_DEFINES_BUILDRULEFAMILY][self.ToolChain]:\r
+            EdkLogger.verbose("No tool chain family found in configuration for %s. Default to MSFT." \\r
+                               % self.ToolChain)\r
+            return TAB_COMPILER_MSFT\r
+\r
+        return ToolDefinition[TAB_TOD_DEFINES_BUILDRULEFAMILY][self.ToolChain]\r
 \r
     ## Return the build options specific for all modules in this platform\r
-    def _GetBuildOptions(self):\r
-        if self._BuildOption is None:\r
-            self._BuildOption = self._ExpandBuildOption(self.Platform.BuildOptions)\r
-        return self._BuildOption\r
+    @cached_property\r
+    def BuildOption(self):\r
+        return self._ExpandBuildOption(self.Platform.BuildOptions)\r
+\r
+    def _BuildOptionWithToolDef(self, ToolDef):\r
+        return self._ExpandBuildOption(self.Platform.BuildOptions, ToolDef=ToolDef)\r
 \r
     ## Return the build options specific for EDK modules in this platform\r
-    def _GetEdkBuildOptions(self):\r
-        if self._EdkBuildOption is None:\r
-            self._EdkBuildOption = self._ExpandBuildOption(self.Platform.BuildOptions, EDK_NAME)\r
-        return self._EdkBuildOption\r
+    @cached_property\r
+    def EdkBuildOption(self):\r
+        return self._ExpandBuildOption(self.Platform.BuildOptions, EDK_NAME)\r
 \r
     ## Return the build options specific for EDKII modules in this platform\r
-    def _GetEdkIIBuildOptions(self):\r
-        if self._EdkIIBuildOption is None:\r
-            self._EdkIIBuildOption = self._ExpandBuildOption(self.Platform.BuildOptions, EDKII_NAME)\r
-        return self._EdkIIBuildOption\r
+    @cached_property\r
+    def EdkIIBuildOption(self):\r
+        return self._ExpandBuildOption(self.Platform.BuildOptions, EDKII_NAME)\r
 \r
     ## Parse build_rule.txt in Conf Directory.\r
     #\r
     #   @retval     BuildRule object\r
     #\r
-    def _GetBuildRule(self):\r
-        if self._BuildRule is None:\r
-            BuildRuleFile = None\r
-            if TAB_TAT_DEFINES_BUILD_RULE_CONF in self.Workspace.TargetTxt.TargetTxtDictionary:\r
-                BuildRuleFile = self.Workspace.TargetTxt.TargetTxtDictionary[TAB_TAT_DEFINES_BUILD_RULE_CONF]\r
-            if not BuildRuleFile:\r
-                BuildRuleFile = gDefaultBuildRuleFile\r
-            self._BuildRule = BuildRule(BuildRuleFile)\r
-            if self._BuildRule._FileVersion == "":\r
-                self._BuildRule._FileVersion = AutoGenReqBuildRuleVerNum\r
-            else:\r
-                if self._BuildRule._FileVersion < AutoGenReqBuildRuleVerNum :\r
-                    # If Build Rule's version is less than the version number required by the tools, halting the build.\r
-                    EdkLogger.error("build", AUTOGEN_ERROR,\r
-                                    ExtraData="The version number [%s] of build_rule.txt is less than the version number required by the AutoGen.(the minimum required version number is [%s])"\\r
-                                     % (self._BuildRule._FileVersion, AutoGenReqBuildRuleVerNum))\r
-\r
-        return self._BuildRule\r
+    @cached_property\r
+    def BuildRule(self):\r
+        BuildRuleFile = None\r
+        if TAB_TAT_DEFINES_BUILD_RULE_CONF in self.Workspace.TargetTxt.TargetTxtDictionary:\r
+            BuildRuleFile = self.Workspace.TargetTxt.TargetTxtDictionary[TAB_TAT_DEFINES_BUILD_RULE_CONF]\r
+        if not BuildRuleFile:\r
+            BuildRuleFile = gDefaultBuildRuleFile\r
+        RetVal = BuildRule(BuildRuleFile)\r
+        if RetVal._FileVersion == "":\r
+            RetVal._FileVersion = AutoGenReqBuildRuleVerNum\r
+        else:\r
+            if RetVal._FileVersion < AutoGenReqBuildRuleVerNum :\r
+                # If Build Rule's version is less than the version number required by the tools, halting the build.\r
+                EdkLogger.error("build", AUTOGEN_ERROR,\r
+                                ExtraData="The version number [%s] of build_rule.txt is less than the version number required by the AutoGen.(the minimum required version number is [%s])"\\r
+                                 % (RetVal._FileVersion, AutoGenReqBuildRuleVerNum))\r
+        return RetVal\r
 \r
     ## Summarize the packages used by modules in this platform\r
-    def _GetPackageList(self):\r
-        if self._PackageList is None:\r
-            self._PackageList = set()\r
-            for La in self.LibraryAutoGenList:\r
-                self._PackageList.update(La.DependentPackageList)\r
-            for Ma in self.ModuleAutoGenList:\r
-                self._PackageList.update(Ma.DependentPackageList)\r
-            #Collect package set information from INF of FDF\r
-            PkgSet = set()\r
-            for ModuleFile in self._AsBuildModuleList:\r
-                if ModuleFile in self.Platform.Modules:\r
-                    continue\r
-                ModuleData = self.BuildDatabase[ModuleFile, self.Arch, self.BuildTarget, self.ToolChain]\r
-                PkgSet.update(ModuleData.Packages)\r
-            self._PackageList = list(self._PackageList) + list (PkgSet)\r
-        return self._PackageList\r
+    @cached_property\r
+    def PackageList(self):\r
+        RetVal = set()\r
+        for La in self.LibraryAutoGenList:\r
+            RetVal.update(La.DependentPackageList)\r
+        for Ma in self.ModuleAutoGenList:\r
+            RetVal.update(Ma.DependentPackageList)\r
+        #Collect package set information from INF of FDF\r
+        for ModuleFile in self._AsBuildModuleList:\r
+            if ModuleFile in self.Platform.Modules:\r
+                continue\r
+            ModuleData = self.BuildDatabase[ModuleFile, self.Arch, self.BuildTarget, self.ToolChain]\r
+            RetVal.update(ModuleData.Packages)\r
+        return list(RetVal)\r
 \r
-    def _GetNonDynamicPcdDict(self):\r
-        if self._NonDynamicPcdDict:\r
-            return self._NonDynamicPcdDict\r
-        for Pcd in self.NonDynamicPcdList:\r
-            self._NonDynamicPcdDict[(Pcd.TokenCName, Pcd.TokenSpaceGuidCName)] = Pcd\r
-        return self._NonDynamicPcdDict\r
+    @cached_property\r
+    def NonDynamicPcdDict(self):\r
+        return {(Pcd.TokenCName, Pcd.TokenSpaceGuidCName):Pcd for Pcd in self.NonDynamicPcdList}\r
 \r
     ## Get list of non-dynamic PCDs\r
-    def _GetNonDynamicPcdList(self):\r
-        if self._NonDynamicPcdList is None:\r
+    @property\r
+    def NonDynamicPcdList(self):\r
+        if not self._NonDynamicPcdList:\r
             self.CollectPlatformDynamicPcds()\r
         return self._NonDynamicPcdList\r
 \r
     ## Get list of dynamic PCDs\r
-    def _GetDynamicPcdList(self):\r
-        if self._DynamicPcdList is None:\r
+    @property\r
+    def DynamicPcdList(self):\r
+        if not self._DynamicPcdList:\r
             self.CollectPlatformDynamicPcds()\r
         return self._DynamicPcdList\r
 \r
     ## Generate Token Number for all PCD\r
-    def _GetPcdTokenNumbers(self):\r
-        if self._PcdTokenNumber is None:\r
-            self._PcdTokenNumber = OrderedDict()\r
-            TokenNumber = 1\r
-            #\r
-            # Make the Dynamic and DynamicEx PCD use within different TokenNumber area.\r
-            # Such as:\r
-            #\r
-            # Dynamic PCD:\r
-            # TokenNumber 0 ~ 10\r
-            # DynamicEx PCD:\r
-            # TokeNumber 11 ~ 20\r
-            #\r
-            for Pcd in self.DynamicPcdList:\r
-                if Pcd.Phase == "PEI" and Pcd.Type in PCD_DYNAMIC_TYPE_SET:\r
-                    EdkLogger.debug(EdkLogger.DEBUG_5, "%s %s (%s) -> %d" % (Pcd.TokenCName, Pcd.TokenSpaceGuidCName, Pcd.Phase, TokenNumber))\r
-                    self._PcdTokenNumber[Pcd.TokenCName, Pcd.TokenSpaceGuidCName] = TokenNumber\r
-                    TokenNumber += 1\r
-\r
-            for Pcd in self.DynamicPcdList:\r
-                if Pcd.Phase == "PEI" and Pcd.Type in PCD_DYNAMIC_EX_TYPE_SET:\r
-                    EdkLogger.debug(EdkLogger.DEBUG_5, "%s %s (%s) -> %d" % (Pcd.TokenCName, Pcd.TokenSpaceGuidCName, Pcd.Phase, TokenNumber))\r
-                    self._PcdTokenNumber[Pcd.TokenCName, Pcd.TokenSpaceGuidCName] = TokenNumber\r
-                    TokenNumber += 1\r
-\r
-            for Pcd in self.DynamicPcdList:\r
-                if Pcd.Phase == "DXE" and Pcd.Type in PCD_DYNAMIC_TYPE_SET:\r
-                    EdkLogger.debug(EdkLogger.DEBUG_5, "%s %s (%s) -> %d" % (Pcd.TokenCName, Pcd.TokenSpaceGuidCName, Pcd.Phase, TokenNumber))\r
-                    self._PcdTokenNumber[Pcd.TokenCName, Pcd.TokenSpaceGuidCName] = TokenNumber\r
-                    TokenNumber += 1\r
-\r
-            for Pcd in self.DynamicPcdList:\r
-                if Pcd.Phase == "DXE" and Pcd.Type in PCD_DYNAMIC_EX_TYPE_SET:\r
-                    EdkLogger.debug(EdkLogger.DEBUG_5, "%s %s (%s) -> %d" % (Pcd.TokenCName, Pcd.TokenSpaceGuidCName, Pcd.Phase, TokenNumber))\r
-                    self._PcdTokenNumber[Pcd.TokenCName, Pcd.TokenSpaceGuidCName] = TokenNumber\r
-                    TokenNumber += 1\r
-\r
-            for Pcd in self.NonDynamicPcdList:\r
-                self._PcdTokenNumber[Pcd.TokenCName, Pcd.TokenSpaceGuidCName] = TokenNumber\r
+    @cached_property\r
+    def PcdTokenNumber(self):\r
+        RetVal = OrderedDict()\r
+        TokenNumber = 1\r
+        #\r
+        # Make the Dynamic and DynamicEx PCD use within different TokenNumber area.\r
+        # Such as:\r
+        #\r
+        # Dynamic PCD:\r
+        # TokenNumber 0 ~ 10\r
+        # DynamicEx PCD:\r
+        # TokeNumber 11 ~ 20\r
+        #\r
+        for Pcd in self.DynamicPcdList:\r
+            if Pcd.Phase == "PEI" and Pcd.Type in PCD_DYNAMIC_TYPE_SET:\r
+                EdkLogger.debug(EdkLogger.DEBUG_5, "%s %s (%s) -> %d" % (Pcd.TokenCName, Pcd.TokenSpaceGuidCName, Pcd.Phase, TokenNumber))\r
+                RetVal[Pcd.TokenCName, Pcd.TokenSpaceGuidCName] = TokenNumber\r
+                TokenNumber += 1\r
+\r
+        for Pcd in self.DynamicPcdList:\r
+            if Pcd.Phase == "PEI" and Pcd.Type in PCD_DYNAMIC_EX_TYPE_SET:\r
+                EdkLogger.debug(EdkLogger.DEBUG_5, "%s %s (%s) -> %d" % (Pcd.TokenCName, Pcd.TokenSpaceGuidCName, Pcd.Phase, TokenNumber))\r
+                RetVal[Pcd.TokenCName, Pcd.TokenSpaceGuidCName] = TokenNumber\r
+                TokenNumber += 1\r
+\r
+        for Pcd in self.DynamicPcdList:\r
+            if Pcd.Phase == "DXE" and Pcd.Type in PCD_DYNAMIC_TYPE_SET:\r
+                EdkLogger.debug(EdkLogger.DEBUG_5, "%s %s (%s) -> %d" % (Pcd.TokenCName, Pcd.TokenSpaceGuidCName, Pcd.Phase, TokenNumber))\r
+                RetVal[Pcd.TokenCName, Pcd.TokenSpaceGuidCName] = TokenNumber\r
                 TokenNumber += 1\r
-        return self._PcdTokenNumber\r
 \r
-    ## Summarize ModuleAutoGen objects of all modules/libraries to be built for this platform\r
-    def _GetAutoGenObjectList(self):\r
-        self._ModuleAutoGenList = []\r
-        self._LibraryAutoGenList = []\r
+        for Pcd in self.DynamicPcdList:\r
+            if Pcd.Phase == "DXE" and Pcd.Type in PCD_DYNAMIC_EX_TYPE_SET:\r
+                EdkLogger.debug(EdkLogger.DEBUG_5, "%s %s (%s) -> %d" % (Pcd.TokenCName, Pcd.TokenSpaceGuidCName, Pcd.Phase, TokenNumber))\r
+                RetVal[Pcd.TokenCName, Pcd.TokenSpaceGuidCName] = TokenNumber\r
+                TokenNumber += 1\r
+\r
+        for Pcd in self.NonDynamicPcdList:\r
+            RetVal[Pcd.TokenCName, Pcd.TokenSpaceGuidCName] = TokenNumber\r
+            TokenNumber += 1\r
+        return RetVal\r
+\r
+    @cached_property\r
+    def _MaList(self):\r
         for ModuleFile in self.Platform.Modules:\r
             Ma = ModuleAutoGen(\r
-                    self.Workspace,\r
-                    ModuleFile,\r
-                    self.BuildTarget,\r
-                    self.ToolChain,\r
-                    self.Arch,\r
-                    self.MetaFile\r
-                    )\r
-            if Ma not in self._ModuleAutoGenList:\r
-                self._ModuleAutoGenList.append(Ma)\r
-            for La in Ma.LibraryAutoGenList:\r
-                if La not in self._LibraryAutoGenList:\r
-                    self._LibraryAutoGenList.append(La)\r
-                if Ma not in La.ReferenceModules:\r
-                    La.ReferenceModules.append(Ma)\r
+                  self.Workspace,\r
+                  ModuleFile,\r
+                  self.BuildTarget,\r
+                  self.ToolChain,\r
+                  self.Arch,\r
+                  self.MetaFile\r
+                  )\r
+            self.Platform.Modules[ModuleFile].M = Ma\r
+        return [x.M for x in self.Platform.Modules.values()]\r
 \r
     ## Summarize ModuleAutoGen objects of all modules to be built for this platform\r
-    def _GetModuleAutoGenList(self):\r
-        if self._ModuleAutoGenList is None:\r
-            self._GetAutoGenObjectList()\r
-        return self._ModuleAutoGenList\r
+    @cached_property\r
+    def ModuleAutoGenList(self):\r
+        RetVal = []\r
+        for Ma in self._MaList:\r
+            if Ma not in RetVal:\r
+                RetVal.append(Ma)\r
+        return RetVal\r
 \r
     ## Summarize ModuleAutoGen objects of all libraries to be built for this platform\r
-    def _GetLibraryAutoGenList(self):\r
-        if self._LibraryAutoGenList is None:\r
-            self._GetAutoGenObjectList()\r
-        return self._LibraryAutoGenList\r
+    @cached_property\r
+    def LibraryAutoGenList(self):\r
+        RetVal = []\r
+        for Ma in self._MaList:\r
+            for La in Ma.LibraryAutoGenList:\r
+                if La not in RetVal:\r
+                    RetVal.append(La)\r
+                if Ma not in La.ReferenceModules:\r
+                    La.ReferenceModules.append(Ma)\r
+        return RetVal\r
 \r
     ## Test if a module is supported by the platform\r
     #\r
@@ -2048,8 +2123,8 @@ class PlatformAutoGen(AutoGen):
 \r
     ## Override PCD setting (type, value, ...)\r
     #\r
-    #   @param  ToPcd       The PCD to be overrided\r
-    #   @param  FromPcd     The PCD overrideing from\r
+    #   @param  ToPcd       The PCD to be overridden\r
+    #   @param  FromPcd     The PCD overriding from\r
     #\r
     def _OverridePcd(self, ToPcd, FromPcd, Module="", Msg="", Library=""):\r
         #\r
@@ -2090,10 +2165,12 @@ class PlatformAutoGen(AutoGen):
                 ToPcd.DatumType = FromPcd.DatumType\r
             if FromPcd.SkuInfoList:\r
                 ToPcd.SkuInfoList = FromPcd.SkuInfoList\r
+            if FromPcd.UserDefinedDefaultStoresFlag:\r
+                ToPcd.UserDefinedDefaultStoresFlag = FromPcd.UserDefinedDefaultStoresFlag\r
             # Add Flexible PCD format parse\r
             if ToPcd.DefaultValue:\r
                 try:\r
-                    ToPcd.DefaultValue = ValueExpressionEx(ToPcd.DefaultValue, ToPcd.DatumType, self._GuidDict)(True)\r
+                    ToPcd.DefaultValue = ValueExpressionEx(ToPcd.DefaultValue, ToPcd.DatumType, self.Workspace._GuidDict)(True)\r
                 except BadExpression as Value:\r
                     EdkLogger.error('Parser', FORMAT_INVALID, 'PCD [%s.%s] Value "%s", %s' %(ToPcd.TokenSpaceGuidCName, ToPcd.TokenCName, ToPcd.DefaultValue, Value),\r
                                         File=self.MetaFile)\r
@@ -2106,6 +2183,7 @@ class PlatformAutoGen(AutoGen):
             ToPcd.validateranges = FromPcd.validateranges\r
             ToPcd.validlists = FromPcd.validlists\r
             ToPcd.expressions = FromPcd.expressions\r
+            ToPcd.CustomAttribute = FromPcd.CustomAttribute\r
 \r
         if FromPcd is not None and ToPcd.DatumType == TAB_VOID and not ToPcd.MaxDatumSize:\r
             EdkLogger.debug(EdkLogger.DEBUG_9, "No MaxDatumSize specified for PCD %s.%s" \\r
@@ -2133,7 +2211,7 @@ class PlatformAutoGen(AutoGen):
 \r
     ## Apply PCD setting defined platform to a module\r
     #\r
-    #   @param  Module  The module from which the PCD setting will be overrided\r
+    #   @param  Module  The module from which the PCD setting will be overridden\r
     #\r
     #   @retval PCD_list    The list PCDs with settings from platform\r
     #\r
@@ -2168,6 +2246,13 @@ class PlatformAutoGen(AutoGen):
         if Module in self.Platform.Modules:\r
             PlatformModule = self.Platform.Modules[str(Module)]\r
             for Key  in PlatformModule.Pcds:\r
+                if GlobalData.BuildOptionPcd:\r
+                    for pcd in GlobalData.BuildOptionPcd:\r
+                        (TokenSpaceGuidCName, TokenCName, FieldName, pcdvalue, _) = pcd\r
+                        if (TokenCName, TokenSpaceGuidCName) == Key and FieldName =="":\r
+                            PlatformModule.Pcds[Key].DefaultValue = pcdvalue\r
+                            PlatformModule.Pcds[Key].PcdValueFromComm = pcdvalue\r
+                            break\r
                 Flag = False\r
                 if Key in Pcds:\r
                     ToPcd = Pcds[Key]\r
@@ -2194,44 +2279,9 @@ class PlatformAutoGen(AutoGen):
                     Pcd.MaxDatumSize = str(len(Value.split(',')))\r
                 else:\r
                     Pcd.MaxDatumSize = str(len(Value) - 1)\r
-        return Pcds.values()\r
+        return list(Pcds.values())\r
 \r
-    ## Resolve library names to library modules\r
-    #\r
-    # (for Edk.x modules)\r
-    #\r
-    #   @param  Module  The module from which the library names will be resolved\r
-    #\r
-    #   @retval library_list    The list of library modules\r
-    #\r
-    def ResolveLibraryReference(self, Module):\r
-        EdkLogger.verbose("")\r
-        EdkLogger.verbose("Library instances of module [%s] [%s]:" % (str(Module), self.Arch))\r
-        LibraryConsumerList = [Module]\r
-\r
-        # "CompilerStub" is a must for Edk modules\r
-        if Module.Libraries:\r
-            Module.Libraries.append("CompilerStub")\r
-        LibraryList = []\r
-        while len(LibraryConsumerList) > 0:\r
-            M = LibraryConsumerList.pop()\r
-            for LibraryName in M.Libraries:\r
-                Library = self.Platform.LibraryClasses[LibraryName, ':dummy:']\r
-                if Library is None:\r
-                    for Key in self.Platform.LibraryClasses.data:\r
-                        if LibraryName.upper() == Key.upper():\r
-                            Library = self.Platform.LibraryClasses[Key, ':dummy:']\r
-                            break\r
-                    if Library is None:\r
-                        EdkLogger.warn("build", "Library [%s] is not found" % LibraryName, File=str(M),\r
-                            ExtraData="\t%s [%s]" % (str(Module), self.Arch))\r
-                        continue\r
 \r
-                if Library not in LibraryList:\r
-                    LibraryList.append(Library)\r
-                    LibraryConsumerList.append(Library)\r
-                    EdkLogger.verbose("\t" + LibraryName + " : " + str(Library) + ' ' + str(type(Library)))\r
-        return LibraryList\r
 \r
     ## Calculate the priority value of the build option\r
     #\r
@@ -2242,15 +2292,15 @@ class PlatformAutoGen(AutoGen):
     def CalculatePriorityValue(self, Key):\r
         Target, ToolChain, Arch, CommandType, Attr = Key.split('_')\r
         PriorityValue = 0x11111\r
-        if Target == "*":\r
+        if Target == TAB_STAR:\r
             PriorityValue &= 0x01111\r
-        if ToolChain == "*":\r
+        if ToolChain == TAB_STAR:\r
             PriorityValue &= 0x10111\r
-        if Arch == "*":\r
+        if Arch == TAB_STAR:\r
             PriorityValue &= 0x11011\r
-        if CommandType == "*":\r
+        if CommandType == TAB_STAR:\r
             PriorityValue &= 0x11101\r
-        if Attr == "*":\r
+        if Attr == TAB_STAR:\r
             PriorityValue &= 0x11110\r
 \r
         return self.PrioList["0x%0.5x" % PriorityValue]\r
@@ -2259,10 +2309,16 @@ class PlatformAutoGen(AutoGen):
     ## Expand * in build option key\r
     #\r
     #   @param  Options     Options to be expanded\r
+    #   @param  ToolDef     Use specified ToolDef instead of full version.\r
+    #                       This is needed during initialization to prevent\r
+    #                       infinite recursion betweeh BuildOptions,\r
+    #                       ToolDefinition, and this function.\r
     #\r
     #   @retval options     Options expanded\r
     #\r
-    def _ExpandBuildOption(self, Options, ModuleStyle=None):\r
+    def _ExpandBuildOption(self, Options, ModuleStyle=None, ToolDef=None):\r
+        if not ToolDef:\r
+            ToolDef = self.ToolDefinition\r
         BuildOptions = {}\r
         FamilyMatch  = False\r
         FamilyIsNull = True\r
@@ -2279,9 +2335,9 @@ class PlatformAutoGen(AutoGen):
             if (Key[0] == self.BuildRuleFamily and\r
                 (ModuleStyle is None or len(Key) < 3 or (len(Key) > 2 and Key[2] == ModuleStyle))):\r
                 Target, ToolChain, Arch, CommandType, Attr = Key[1].split('_')\r
-                if (Target == self.BuildTarget or Target == "*") and\\r
-                    (ToolChain == self.ToolChain or ToolChain == "*") and\\r
-                    (Arch == self.Arch or Arch == "*") and\\r
+                if (Target == self.BuildTarget or Target == TAB_STAR) and\\r
+                    (ToolChain == self.ToolChain or ToolChain == TAB_STAR) and\\r
+                    (Arch == self.Arch or Arch == TAB_STAR) and\\r
                     Options[Key].startswith("="):\r
 \r
                     if OverrideList.get(Key[1]) is not None:\r
@@ -2292,7 +2348,7 @@ class PlatformAutoGen(AutoGen):
         # Use the highest priority value.\r
         #\r
         if (len(OverrideList) >= 2):\r
-            KeyList = OverrideList.keys()\r
+            KeyList = list(OverrideList.keys())\r
             for Index in range(len(KeyList)):\r
                 NowKey = KeyList[Index]\r
                 Target1, ToolChain1, Arch1, CommandType1, Attr1 = NowKey.split("_")\r
@@ -2302,11 +2358,11 @@ class PlatformAutoGen(AutoGen):
                     # Compare two Key, if one is included by another, choose the higher priority one\r
                     #\r
                     Target2, ToolChain2, Arch2, CommandType2, Attr2 = NextKey.split("_")\r
-                    if (Target1 == Target2 or Target1 == "*" or Target2 == "*") and\\r
-                        (ToolChain1 == ToolChain2 or ToolChain1 == "*" or ToolChain2 == "*") and\\r
-                        (Arch1 == Arch2 or Arch1 == "*" or Arch2 == "*") and\\r
-                        (CommandType1 == CommandType2 or CommandType1 == "*" or CommandType2 == "*") and\\r
-                        (Attr1 == Attr2 or Attr1 == "*" or Attr2 == "*"):\r
+                    if (Target1 == Target2 or Target1 == TAB_STAR or Target2 == TAB_STAR) and\\r
+                        (ToolChain1 == ToolChain2 or ToolChain1 == TAB_STAR or ToolChain2 == TAB_STAR) and\\r
+                        (Arch1 == Arch2 or Arch1 == TAB_STAR or Arch2 == TAB_STAR) and\\r
+                        (CommandType1 == CommandType2 or CommandType1 == TAB_STAR or CommandType2 == TAB_STAR) and\\r
+                        (Attr1 == Attr2 or Attr1 == TAB_STAR or Attr2 == TAB_STAR):\r
 \r
                         if self.CalculatePriorityValue(NowKey) > self.CalculatePriorityValue(NextKey):\r
                             if Options.get((self.BuildRuleFamily, NextKey)) is not None:\r
@@ -2326,18 +2382,18 @@ class PlatformAutoGen(AutoGen):
             Family = Key[0]\r
             Target, Tag, Arch, Tool, Attr = Key[1].split("_")\r
             # if tool chain family doesn't match, skip it\r
-            if Tool in self.ToolDefinition and Family != "":\r
+            if Tool in ToolDef and Family != "":\r
                 FamilyIsNull = False\r
-                if self.ToolDefinition[Tool].get(TAB_TOD_DEFINES_BUILDRULEFAMILY, "") != "":\r
-                    if Family != self.ToolDefinition[Tool][TAB_TOD_DEFINES_BUILDRULEFAMILY]:\r
+                if ToolDef[Tool].get(TAB_TOD_DEFINES_BUILDRULEFAMILY, "") != "":\r
+                    if Family != ToolDef[Tool][TAB_TOD_DEFINES_BUILDRULEFAMILY]:\r
                         continue\r
-                elif Family != self.ToolDefinition[Tool][TAB_TOD_DEFINES_FAMILY]:\r
+                elif Family != ToolDef[Tool][TAB_TOD_DEFINES_FAMILY]:\r
                     continue\r
                 FamilyMatch = True\r
             # expand any wildcard\r
-            if Target == "*" or Target == self.BuildTarget:\r
-                if Tag == "*" or Tag == self.ToolChain:\r
-                    if Arch == "*" or Arch == self.Arch:\r
+            if Target == TAB_STAR or Target == self.BuildTarget:\r
+                if Tag == TAB_STAR or Tag == self.ToolChain:\r
+                    if Arch == TAB_STAR or Arch == self.Arch:\r
                         if Tool not in BuildOptions:\r
                             BuildOptions[Tool] = {}\r
                         if Attr != "FLAGS" or Attr not in BuildOptions[Tool] or Options[Key].startswith('='):\r
@@ -2363,16 +2419,16 @@ class PlatformAutoGen(AutoGen):
             Family = Key[0]\r
             Target, Tag, Arch, Tool, Attr = Key[1].split("_")\r
             # if tool chain family doesn't match, skip it\r
-            if Tool not in self.ToolDefinition or Family == "":\r
+            if Tool not in ToolDef or Family == "":\r
                 continue\r
             # option has been added before\r
-            if Family != self.ToolDefinition[Tool][TAB_TOD_DEFINES_FAMILY]:\r
+            if Family != ToolDef[Tool][TAB_TOD_DEFINES_FAMILY]:\r
                 continue\r
 \r
             # expand any wildcard\r
-            if Target == "*" or Target == self.BuildTarget:\r
-                if Tag == "*" or Tag == self.ToolChain:\r
-                    if Arch == "*" or Arch == self.Arch:\r
+            if Target == TAB_STAR or Target == self.BuildTarget:\r
+                if Tag == TAB_STAR or Tag == self.ToolChain:\r
+                    if Arch == TAB_STAR or Arch == self.Arch:\r
                         if Tool not in BuildOptions:\r
                             BuildOptions[Tool] = {}\r
                         if Attr != "FLAGS" or Attr not in BuildOptions[Tool] or Options[Key].startswith('='):\r
@@ -2387,18 +2443,14 @@ class PlatformAutoGen(AutoGen):
 \r
     ## Append build options in platform to a module\r
     #\r
-    #   @param  Module  The module to which the build options will be appened\r
+    #   @param  Module  The module to which the build options will be appended\r
     #\r
     #   @retval options     The options appended with build options in platform\r
     #\r
     def ApplyBuildOption(self, Module):\r
         # Get the different options for the different style module\r
-        if Module.AutoGenVersion < 0x00010005:\r
-            PlatformOptions = self.EdkBuildOption\r
-            ModuleTypeOptions = self.Platform.GetBuildOptionsByModuleType(EDK_NAME, Module.ModuleType)\r
-        else:\r
-            PlatformOptions = self.EdkIIBuildOption\r
-            ModuleTypeOptions = self.Platform.GetBuildOptionsByModuleType(EDKII_NAME, Module.ModuleType)\r
+        PlatformOptions = self.EdkIIBuildOption\r
+        ModuleTypeOptions = self.Platform.GetBuildOptionsByModuleType(EDKII_NAME, Module.ModuleType)\r
         ModuleTypeOptions = self._ExpandBuildOption(ModuleTypeOptions)\r
         ModuleOptions = self._ExpandBuildOption(Module.BuildOptions)\r
         if Module in self.Platform.Modules:\r
@@ -2414,9 +2466,9 @@ class PlatformAutoGen(AutoGen):
                     if Attr == TAB_TOD_DEFINES_BUILDRULEORDER:\r
                         BuildRuleOrder = Options[Tool][Attr]\r
 \r
-        AllTools = set(ModuleOptions.keys() + PlatformOptions.keys() +\r
-                       PlatformModuleOptions.keys() + ModuleTypeOptions.keys() +\r
-                       self.ToolDefinition.keys())\r
+        AllTools = set(list(ModuleOptions.keys()) + list(PlatformOptions.keys()) +\r
+                       list(PlatformModuleOptions.keys()) + list(ModuleTypeOptions.keys()) +\r
+                       list(self.ToolDefinition.keys()))\r
         BuildOptions = defaultdict(lambda: defaultdict(str))\r
         for Tool in AllTools:\r
             for Options in [self.ToolDefinition, ModuleOptions, PlatformOptions, ModuleTypeOptions, PlatformModuleOptions]:\r
@@ -2438,43 +2490,8 @@ class PlatformAutoGen(AutoGen):
                         else:\r
                             BuildOptions[Tool][Attr] = mws.handleWsMacro(Value)\r
 \r
-        if Module.AutoGenVersion < 0x00010005 and self.Workspace.UniFlag is not None:\r
-            #\r
-            # Override UNI flag only for EDK module.\r
-            #\r
-            BuildOptions['BUILD']['FLAGS'] = self.Workspace.UniFlag\r
         return BuildOptions, BuildRuleOrder\r
 \r
-    Platform            = property(_GetPlatform)\r
-    Name                = property(_GetName)\r
-    Guid                = property(_GetGuid)\r
-    Version             = property(_GetVersion)\r
-\r
-    OutputDir           = property(_GetOutputDir)\r
-    BuildDir            = property(_GetBuildDir)\r
-    MakeFileDir         = property(_GetMakeFileDir)\r
-    FdfFile             = property(_GetFdfFile)\r
-\r
-    PcdTokenNumber      = property(_GetPcdTokenNumbers)    # (TokenCName, TokenSpaceGuidCName) : GeneratedTokenNumber\r
-    DynamicPcdList      = property(_GetDynamicPcdList)    # [(TokenCName1, TokenSpaceGuidCName1), (TokenCName2, TokenSpaceGuidCName2), ...]\r
-    NonDynamicPcdList   = property(_GetNonDynamicPcdList)    # [(TokenCName1, TokenSpaceGuidCName1), (TokenCName2, TokenSpaceGuidCName2), ...]\r
-    NonDynamicPcdDict   = property(_GetNonDynamicPcdDict)\r
-    PackageList         = property(_GetPackageList)\r
-\r
-    ToolDefinition      = property(_GetToolDefinition)    # toolcode : tool path\r
-    ToolDefinitionFile  = property(_GetToolDefFile)    # toolcode : lib path\r
-    ToolChainFamily     = property(_GetToolChainFamily)\r
-    BuildRuleFamily     = property(_GetBuildRuleFamily)\r
-    BuildOption         = property(_GetBuildOptions)    # toolcode : option\r
-    EdkBuildOption      = property(_GetEdkBuildOptions)   # edktoolcode : option\r
-    EdkIIBuildOption    = property(_GetEdkIIBuildOptions) # edkiitoolcode : option\r
-\r
-    BuildCommand        = property(_GetBuildCommand)\r
-    BuildRule           = property(_GetBuildRule)\r
-    ModuleAutoGenList   = property(_GetModuleAutoGenList)\r
-    LibraryAutoGenList  = property(_GetLibraryAutoGenList)\r
-    GenFdsCommand       = property(_GenFdsCommand)\r
-\r
 #\r
 # extend lists contained in a dictionary with lists stored in another dictionary\r
 # if CopyToDict is not derived from DefaultDict(list) then this may raise exception\r
@@ -2499,7 +2516,6 @@ class ModuleAutoGen(AutoGen):
     # call super().__init__ then call the worker function with different parameter count\r
     def __init__(self, Workspace, MetaFile, Target, Toolchain, Arch, *args, **kwargs):\r
         if not hasattr(self, "_Init"):\r
-            super(ModuleAutoGen, self).__init__(Workspace, MetaFile, Target, Toolchain, Arch, *args, **kwargs)\r
             self._InitWorker(Workspace, MetaFile, Target, Toolchain, Arch, *args)\r
             self._Init = True\r
 \r
@@ -2530,18 +2546,12 @@ class ModuleAutoGen(AutoGen):
 \r
         self.Workspace = Workspace\r
         self.WorkspaceDir = Workspace.WorkspaceDir\r
-        self._GuidDict = Workspace._GuidDict\r
         self.MetaFile = ModuleFile\r
         self.PlatformInfo = PlatformAutoGen(Workspace, PlatformFile, Target, Toolchain, Arch)\r
 \r
         self.SourceDir = self.MetaFile.SubDir\r
         self.SourceDir = mws.relpath(self.SourceDir, self.WorkspaceDir)\r
 \r
-        self.SourceOverrideDir = None\r
-        # use overrided path defined in DSC file\r
-        if self.MetaFile.Key in GlobalData.gOverrideDir:\r
-            self.SourceOverrideDir = GlobalData.gOverrideDir[self.MetaFile.Key]\r
-\r
         self.ToolChain = Toolchain\r
         self.BuildTarget = Target\r
         self.Arch = Arch\r
@@ -2646,7 +2656,7 @@ class ModuleAutoGen(AutoGen):
     ## Return the module build data object\r
     @cached_property\r
     def Module(self):\r
-        return self.Workspace.BuildDatabase[self.MetaFile, self.Arch, self.BuildTarget, self.ToolChain]\r
+        return self.BuildDatabase[self.MetaFile, self.Arch, self.BuildTarget, self.ToolChain]\r
 \r
     ## Return the module name\r
     @cached_property\r
@@ -2663,7 +2673,7 @@ class ModuleAutoGen(AutoGen):
     def Guid(self):\r
         #\r
         # To build same module more than once, the module path with FILE_GUID overridden has\r
-        # the file name FILE_GUIDmodule.inf, but the relative path (self.MetaFile.File) is the realy path\r
+        # the file name FILE_GUIDmodule.inf, but the relative path (self.MetaFile.File) is the real path\r
         # in DSC. The overridden GUID can be retrieved from file name\r
         #\r
         if os.path.basename(self.MetaFile.File) != os.path.basename(self.MetaFile.Path):\r
@@ -2723,7 +2733,7 @@ class ModuleAutoGen(AutoGen):
                                     self.MetaFile.BaseName\r
             ))\r
 \r
-    ## Return the directory to store the intermediate object files of the mdoule\r
+    ## Return the directory to store the intermediate object files of the module\r
     @cached_property\r
     def OutputDir(self):\r
         return _MakeDir((self.BuildDir, "OUTPUT"))\r
@@ -2735,7 +2745,7 @@ class ModuleAutoGen(AutoGen):
             return path.join(self.PlatformInfo.BuildDir, TAB_FV_DIRECTORY, "Ffs", self.Guid + self.Name)\r
         return ''\r
 \r
-    ## Return the directory to store auto-gened source files of the mdoule\r
+    ## Return the directory to store auto-gened source files of the module\r
     @cached_property\r
     def DebugDir(self):\r
         return _MakeDir((self.BuildDir, "DEBUG"))\r
@@ -2746,12 +2756,7 @@ class ModuleAutoGen(AutoGen):
         RetVal = {}\r
         for Type in self.Module.CustomMakefile:\r
             MakeType = gMakeTypeMap[Type] if Type in gMakeTypeMap else 'nmake'\r
-            if self.SourceOverrideDir is not None:\r
-                File = os.path.join(self.SourceOverrideDir, self.Module.CustomMakefile[Type])\r
-                if not os.path.exists(File):\r
-                    File = os.path.join(self.SourceDir, self.Module.CustomMakefile[Type])\r
-            else:\r
-                File = os.path.join(self.SourceDir, self.Module.CustomMakefile[Type])\r
+            File = os.path.join(self.SourceDir, self.Module.CustomMakefile[Type])\r
             RetVal[MakeType] = File\r
         return RetVal\r
 \r
@@ -2787,7 +2792,7 @@ class ModuleAutoGen(AutoGen):
 \r
     ## Get the depex string\r
     #\r
-    # @return : a string contain all depex expresion.\r
+    # @return : a string contain all depex expression.\r
     def _GetDepexExpresionString(self):\r
         DepexStr = ''\r
         DepexList = []\r
@@ -2797,11 +2802,11 @@ class ModuleAutoGen(AutoGen):
         for M in [self.Module] + self.DependentLibraryList:\r
             Filename = M.MetaFile.Path\r
             InfObj = InfSectionParser.InfSectionParser(Filename)\r
-            DepexExpresionList = InfObj.GetDepexExpresionList()\r
-            for DepexExpresion in DepexExpresionList:\r
-                for key in DepexExpresion:\r
+            DepexExpressionList = InfObj.GetDepexExpresionList()\r
+            for DepexExpression in DepexExpressionList:\r
+                for key in DepexExpression:\r
                     Arch, ModuleType = key\r
-                    DepexExpr = [x for x in DepexExpresion[key] if not str(x).startswith('#')]\r
+                    DepexExpr = [x for x in DepexExpression[key] if not str(x).startswith('#')]\r
                     # the type of build module is USER_DEFINED.\r
                     # All different DEPEX section tags would be copied into the As Built INF file\r
                     # and there would be separate DEPEX section tags\r
@@ -2856,7 +2861,7 @@ class ModuleAutoGen(AutoGen):
 \r
         DepexList = []\r
         #\r
-        # Append depex from dependent libraries, if not "BEFORE", "AFTER" expresion\r
+        # Append depex from dependent libraries, if not "BEFORE", "AFTER" expression\r
         #\r
         for M in [self.Module] + self.DependentLibraryList:\r
             Inherited = False\r
@@ -2870,10 +2875,16 @@ class ModuleAutoGen(AutoGen):
                     if '.' not in item:\r
                         NewList.append(item)\r
                     else:\r
-                        if item not in self._FixedPcdVoidTypeDict:\r
+                        FixedVoidTypePcds = {}\r
+                        if item in self.FixedVoidTypePcds:\r
+                            FixedVoidTypePcds = self.FixedVoidTypePcds\r
+                        elif M in self.PlatformInfo.LibraryAutoGenList:\r
+                            Index = self.PlatformInfo.LibraryAutoGenList.index(M)\r
+                            FixedVoidTypePcds = self.PlatformInfo.LibraryAutoGenList[Index].FixedVoidTypePcds\r
+                        if item not in FixedVoidTypePcds:\r
                             EdkLogger.error("build", FORMAT_INVALID, "{} used in [Depex] section should be used as FixedAtBuild type and VOID* datum type in the module.".format(item))\r
                         else:\r
-                            Value = self._FixedPcdVoidTypeDict[item]\r
+                            Value = FixedVoidTypePcds[item]\r
                             if len(Value.split(',')) != 16:\r
                                 EdkLogger.error("build", FORMAT_INVALID,\r
                                                 "{} used in [Depex] section should be used as FixedAtBuild type and VOID* datum type and 16 bytes in the module.".format(item))\r
@@ -2994,7 +3005,7 @@ class ModuleAutoGen(AutoGen):
             except KeyError:\r
                 FlagOption = ''\r
 \r
-            if self.PlatformInfo.ToolChainFamily != 'RVCT':\r
+            if self.ToolChainFamily != 'RVCT':\r
                 IncPathList = [NormPath(Path, self.Macros) for Path in BuildOptIncludeRegEx.findall(FlagOption)]\r
             else:\r
                 #\r
@@ -3009,7 +3020,7 @@ class ModuleAutoGen(AutoGen):
             # EDK II modules must not reference header files outside of the packages they depend on or\r
             # within the module's directory tree. Report error if violation.\r
             #\r
-            if self.AutoGenVersion >= 0x00010005:\r
+            if GlobalData.gDisableIncludePathCheck == False:\r
                 for Path in IncPathList:\r
                     if (Path not in self.IncludePathList) and (CommonPath([Path, self.MetaFile.Dir]) != self.MetaFile.Dir):\r
                         ErrMsg = "The include directory for the EDK II module in this line is invalid %s specified in %s FLAGS '%s'" % (Path, Tool, FlagOption)\r
@@ -3028,8 +3039,8 @@ class ModuleAutoGen(AutoGen):
     @cached_property\r
     def SourceFileList(self):\r
         RetVal = []\r
-        ToolChainTagSet = {"", "*", self.ToolChain}\r
-        ToolChainFamilySet = {"", "*", self.ToolChainFamily, self.BuildRuleFamily}\r
+        ToolChainTagSet = {"", TAB_STAR, self.ToolChain}\r
+        ToolChainFamilySet = {"", TAB_STAR, self.ToolChainFamily, self.BuildRuleFamily}\r
         for F in self.Module.Sources:\r
             # match tool chain\r
             if F.TagName not in ToolChainTagSet:\r
@@ -3046,7 +3057,7 @@ class ModuleAutoGen(AutoGen):
                 continue\r
 \r
             # add the file path into search path list for file including\r
-            if F.Dir not in self.IncludePathList and self.AutoGenVersion >= 0x00010005:\r
+            if F.Dir not in self.IncludePathList:\r
                 self.IncludePathList.insert(0, F.Dir)\r
             RetVal.append(F)\r
 \r
@@ -3061,7 +3072,7 @@ class ModuleAutoGen(AutoGen):
         self.BuildOption\r
         for SingleFile in FileList:\r
             if self.BuildRuleOrder and SingleFile.Ext in self.BuildRuleOrder and SingleFile.Ext in self.BuildRules:\r
-                key = SingleFile.Path.split(SingleFile.Ext)[0]\r
+                key = SingleFile.Path.rsplit(SingleFile.Ext,1)[0]\r
                 if key in Order_Dict:\r
                     Order_Dict[key].append(SingleFile.Ext)\r
                 else:\r
@@ -3104,7 +3115,7 @@ class ModuleAutoGen(AutoGen):
     def BinaryFileList(self):\r
         RetVal = []\r
         for F in self.Module.Binaries:\r
-            if F.Target not in [TAB_ARCH_COMMON, '*'] and F.Target != self.BuildTarget:\r
+            if F.Target not in [TAB_ARCH_COMMON, TAB_STAR] and F.Target != self.BuildTarget:\r
                 continue\r
             RetVal.append(F)\r
             self._ApplyBuildRule(F, F.Type, BinaryFileList=RetVal)\r
@@ -3282,7 +3293,7 @@ class ModuleAutoGen(AutoGen):
             AutoFile = PathClass(gAutoGenStringFileName % {"module_name":self.Name}, self.DebugDir)\r
             RetVal[AutoFile] = str(StringH)\r
             self._ApplyBuildRule(AutoFile, TAB_UNKNOWN_FILE)\r
-        if UniStringBinBuffer is not None and UniStringBinBuffer.getvalue() != "":\r
+        if UniStringBinBuffer is not None and UniStringBinBuffer.getvalue() != b"":\r
             AutoFile = PathClass(gAutoGenStringFormFileName % {"module_name":self.Name}, self.OutputDir)\r
             RetVal[AutoFile] = UniStringBinBuffer.getvalue()\r
             AutoFile.IsBinary = True\r
@@ -3293,7 +3304,7 @@ class ModuleAutoGen(AutoGen):
             AutoFile = PathClass(gAutoGenImageDefFileName % {"module_name":self.Name}, self.DebugDir)\r
             RetVal[AutoFile] = str(StringIdf)\r
             self._ApplyBuildRule(AutoFile, TAB_UNKNOWN_FILE)\r
-        if IdfGenBinBuffer is not None and IdfGenBinBuffer.getvalue() != "":\r
+        if IdfGenBinBuffer is not None and IdfGenBinBuffer.getvalue() != b"":\r
             AutoFile = PathClass(gAutoGenIdfFileName % {"module_name":self.Name}, self.OutputDir)\r
             RetVal[AutoFile] = IdfGenBinBuffer.getvalue()\r
             AutoFile.IsBinary = True\r
@@ -3302,14 +3313,12 @@ class ModuleAutoGen(AutoGen):
             IdfGenBinBuffer.close()\r
         return RetVal\r
 \r
-    ## Return the list of library modules explicitly or implicityly used by this module\r
+    ## Return the list of library modules explicitly or implicitly used by this module\r
     @cached_property\r
     def DependentLibraryList(self):\r
         # only merge library classes and PCD for non-library module\r
         if self.IsLibrary:\r
             return []\r
-        if self.AutoGenVersion < 0x00010005:\r
-            return self.PlatformInfo.ResolveLibraryReference(self.Module)\r
         return self.PlatformInfo.ApplyLibraryInstance(self.Module)\r
 \r
     ## Get the list of PCDs from current module\r
@@ -3398,19 +3407,8 @@ class ModuleAutoGen(AutoGen):
     @cached_property\r
     def IncludePathList(self):\r
         RetVal = []\r
-        if self.AutoGenVersion < 0x00010005:\r
-            for Inc in self.Module.Includes:\r
-                if Inc not in RetVal:\r
-                    RetVal.append(Inc)\r
-                # for Edk modules\r
-                Inc = path.join(Inc, self.Arch.capitalize())\r
-                if os.path.exists(Inc) and Inc not in RetVal:\r
-                    RetVal.append(Inc)\r
-            # Edk module needs to put DEBUG_DIR at the end of search path and not to use SOURCE_DIR all the time\r
-            RetVal.append(self.DebugDir)\r
-        else:\r
-            RetVal.append(self.MetaFile.Dir)\r
-            RetVal.append(self.DebugDir)\r
+        RetVal.append(self.MetaFile.Dir)\r
+        RetVal.append(self.DebugDir)\r
 \r
         for Package in self.Module.Packages:\r
             PackageDir = mws.join(self.WorkspaceDir, Package.MetaFile.Dir)\r
@@ -3418,7 +3416,7 @@ class ModuleAutoGen(AutoGen):
                 RetVal.append(PackageDir)\r
             IncludesList = Package.Includes\r
             if Package._PrivateIncludes:\r
-                if not self.MetaFile.Path.startswith(PackageDir):\r
+                if not self.MetaFile.OriginalPath.Path.startswith(PackageDir):\r
                     IncludesList = list(set(Package.Includes).difference(set(Package._PrivateIncludes)))\r
             for Inc in IncludesList:\r
                 if Inc not in RetVal:\r
@@ -3472,7 +3470,7 @@ class ModuleAutoGen(AutoGen):
                 Guid = gEfiVarStoreGuidPattern.search(Content, Pos)\r
                 if not Guid:\r
                     break\r
-                NameArray = ConvertStringToByteArray('L"' + Name.group(1) + '"')\r
+                NameArray = _ConvertStringToByteArray('L"' + Name.group(1) + '"')\r
                 NameGuids.add((NameArray, GuidStructureStringToGuidString(Guid.group(1))))\r
                 Pos = Content.find('efivarstore', Name.end())\r
         if not NameGuids:\r
@@ -3485,7 +3483,7 @@ class ModuleAutoGen(AutoGen):
                 Value = GuidValue(SkuInfo.VariableGuid, self.PlatformInfo.PackageList, self.MetaFile.Path)\r
                 if not Value:\r
                     continue\r
-                Name = ConvertStringToByteArray(SkuInfo.VariableName)\r
+                Name = _ConvertStringToByteArray(SkuInfo.VariableName)\r
                 Guid = GuidStructureStringToGuidString(Value)\r
                 if (Name, Guid) in NameGuids and Pcd not in HiiExPcds:\r
                     HiiExPcds.append(Pcd)\r
@@ -3511,7 +3509,7 @@ class ModuleAutoGen(AutoGen):
             return None\r
         MapFileName = os.path.join(self.OutputDir, self.Name + ".map")\r
         EfiFileName = os.path.join(self.OutputDir, self.Name + ".efi")\r
-        VfrUniOffsetList = GetVariableOffset(MapFileName, EfiFileName, VfrUniBaseName.values())\r
+        VfrUniOffsetList = GetVariableOffset(MapFileName, EfiFileName, list(VfrUniBaseName.values()))\r
         if not VfrUniOffsetList:\r
             return None\r
 \r
@@ -3524,7 +3522,7 @@ class ModuleAutoGen(AutoGen):
             EdkLogger.error("build", FILE_OPEN_FAILURE, "File open failed for %s" % UniVfrOffsetFileName, None)\r
 \r
         # Use a instance of BytesIO to cache data\r
-        fStringIO = BytesIO('')\r
+        fStringIO = BytesIO()\r
 \r
         for Item in VfrUniOffsetList:\r
             if (Item[0].find("Strings") != -1):\r
@@ -3533,9 +3531,8 @@ class ModuleAutoGen(AutoGen):
                 # GUID + Offset\r
                 # { 0x8913c5e0, 0x33f6, 0x4d86, { 0x9b, 0xf1, 0x43, 0xef, 0x89, 0xfc, 0x6, 0x66 } }\r
                 #\r
-                UniGuid = [0xe0, 0xc5, 0x13, 0x89, 0xf6, 0x33, 0x86, 0x4d, 0x9b, 0xf1, 0x43, 0xef, 0x89, 0xfc, 0x6, 0x66]\r
-                UniGuid = [chr(ItemGuid) for ItemGuid in UniGuid]\r
-                fStringIO.write(''.join(UniGuid))\r
+                UniGuid = b'\xe0\xc5\x13\x89\xf63\x86M\x9b\xf1C\xef\x89\xfc\x06f'\r
+                fStringIO.write(UniGuid)\r
                 UniValue = pack ('Q', int (Item[1], 16))\r
                 fStringIO.write (UniValue)\r
             else:\r
@@ -3544,9 +3541,8 @@ class ModuleAutoGen(AutoGen):
                 # GUID + Offset\r
                 # { 0xd0bc7cb4, 0x6a47, 0x495f, { 0xaa, 0x11, 0x71, 0x7, 0x46, 0xda, 0x6, 0xa2 } };\r
                 #\r
-                VfrGuid = [0xb4, 0x7c, 0xbc, 0xd0, 0x47, 0x6a, 0x5f, 0x49, 0xaa, 0x11, 0x71, 0x7, 0x46, 0xda, 0x6, 0xa2]\r
-                VfrGuid = [chr(ItemGuid) for ItemGuid in VfrGuid]\r
-                fStringIO.write(''.join(VfrGuid))\r
+                VfrGuid = b'\xb4|\xbc\xd0Gj_I\xaa\x11q\x07F\xda\x06\xa2'\r
+                fStringIO.write(VfrGuid)\r
                 VfrValue = pack ('Q', int (Item[1], 16))\r
                 fStringIO.write (VfrValue)\r
         #\r
@@ -3573,10 +3569,6 @@ class ModuleAutoGen(AutoGen):
         if self.IsAsBuiltInfCreated:\r
             return\r
 \r
-        # Skip the following code for EDK I inf\r
-        if self.AutoGenVersion < 0x00010005:\r
-            return\r
-\r
         # Skip the following code for libraries\r
         if self.IsLibrary:\r
             return\r
@@ -3710,6 +3702,10 @@ class ModuleAutoGen(AutoGen):
                 AsBuiltInfDict['binary_item'].append('PE32|' + self.Name + '.efi')\r
             else:\r
                 AsBuiltInfDict['binary_item'].append('BIN|' + File)\r
+        if not self.DepexGenerated:\r
+            DepexFile = os.path.join(self.OutputDir, self.Name + '.depex')\r
+            if os.path.exists(DepexFile):\r
+                self.DepexGenerated = True\r
         if self.DepexGenerated:\r
             self.OutputFile.add(self.Name + '.depex')\r
             if self.ModuleType in [SUP_MODULE_PEIM]:\r
@@ -3806,7 +3802,7 @@ class ModuleAutoGen(AutoGen):
                         Padding = '0x00, '\r
                         if Unicode:\r
                             Padding = Padding * 2\r
-                            ArraySize = ArraySize / 2\r
+                            ArraySize = ArraySize // 2\r
                         if ArraySize < (len(PcdValue) + 1):\r
                             if Pcd.MaxSizeUserSet:\r
                                 EdkLogger.error("build", AUTOGEN_ERROR,\r
@@ -3888,8 +3884,8 @@ class ModuleAutoGen(AutoGen):
         AsBuiltInfDict['userextension_tianocore_item'] = UserExtStr\r
 \r
         # Generated depex expression section in comments.\r
-        DepexExpresion = self._GetDepexExpresionString()\r
-        AsBuiltInfDict['depexsection_item'] = DepexExpresion if DepexExpresion else ''\r
+        DepexExpression = self._GetDepexExpresionString()\r
+        AsBuiltInfDict['depexsection_item'] = DepexExpression if DepexExpression else ''\r
 \r
         AsBuiltInf = TemplateString()\r
         AsBuiltInf.Append(gAsBuiltInfHeaderString.Replace(AsBuiltInfDict))\r
@@ -3901,16 +3897,17 @@ class ModuleAutoGen(AutoGen):
             self.CopyModuleToCache()\r
 \r
     def CopyModuleToCache(self):\r
-        FileDir = path.join(GlobalData.gBinCacheDest, self.Arch, self.SourceDir, self.MetaFile.BaseName)\r
+        FileDir = path.join(GlobalData.gBinCacheDest, self.PlatformInfo.OutputDir, self.BuildTarget + "_" + self.ToolChain, self.Arch, self.SourceDir, self.MetaFile.BaseName)\r
         CreateDirectory (FileDir)\r
         HashFile = path.join(self.BuildDir, self.Name + '.hash')\r
-        ModuleFile = path.join(self.OutputDir, self.Name + '.inf')\r
         if os.path.exists(HashFile):\r
             shutil.copy2(HashFile, FileDir)\r
-        if os.path.exists(ModuleFile):\r
-            shutil.copy2(ModuleFile, FileDir)\r
+        if not self.IsLibrary:\r
+            ModuleFile = path.join(self.OutputDir, self.Name + '.inf')\r
+            if os.path.exists(ModuleFile):\r
+                shutil.copy2(ModuleFile, FileDir)\r
         if not self.OutputFile:\r
-            Ma = self.Workspace.BuildDatabase[PathClass(ModuleFile), self.Arch, self.BuildTarget, self.ToolChain]\r
+            Ma = self.BuildDatabase[self.MetaFile, self.Arch, self.BuildTarget, self.ToolChain]\r
             self.OutputFile = Ma.Binaries\r
         if self.OutputFile:\r
             for File in self.OutputFile:\r
@@ -3918,17 +3915,27 @@ class ModuleAutoGen(AutoGen):
                 if not os.path.isabs(File):\r
                     File = os.path.join(self.OutputDir, File)\r
                 if os.path.exists(File):\r
-                    shutil.copy2(File, FileDir)\r
+                    sub_dir = os.path.relpath(File, self.OutputDir)\r
+                    destination_file = os.path.join(FileDir, sub_dir)\r
+                    destination_dir = os.path.dirname(destination_file)\r
+                    CreateDirectory(destination_dir)\r
+                    shutil.copy2(File, destination_dir)\r
 \r
     def AttemptModuleCacheCopy(self):\r
+        # If library or Module is binary do not skip by hash\r
         if self.IsBinaryModule:\r
             return False\r
-        FileDir = path.join(GlobalData.gBinCacheSource, self.Arch, self.SourceDir, self.MetaFile.BaseName)\r
+        # .inc is contains binary information so do not skip by hash as well\r
+        for f_ext in self.SourceFileList:\r
+            if '.inc' in str(f_ext):\r
+                return False\r
+        FileDir = path.join(GlobalData.gBinCacheSource, self.PlatformInfo.OutputDir, self.BuildTarget + "_" + self.ToolChain, self.Arch, self.SourceDir, self.MetaFile.BaseName)\r
         HashFile = path.join(FileDir, self.Name + '.hash')\r
         if os.path.exists(HashFile):\r
             f = open(HashFile, 'r')\r
             CacheHash = f.read()\r
             f.close()\r
+            self.GenModuleHash()\r
             if GlobalData.gModuleHash[self.Arch][self.Name]:\r
                 if CacheHash == GlobalData.gModuleHash[self.Arch][self.Name]:\r
                     for root, dir, files in os.walk(FileDir):\r
@@ -3937,7 +3944,11 @@ class ModuleAutoGen(AutoGen):
                                 shutil.copy2(HashFile, self.BuildDir)\r
                             else:\r
                                 File = path.join(root, f)\r
-                                shutil.copy2(File, self.OutputDir)\r
+                                sub_dir = os.path.relpath(File, FileDir)\r
+                                destination_file = os.path.join(self.OutputDir, sub_dir)\r
+                                destination_dir = os.path.dirname(destination_file)\r
+                                CreateDirectory(destination_dir)\r
+                                shutil.copy2(File, destination_dir)\r
                     if self.Name == "PcdPeim" or self.Name == "PcdDxe":\r
                         CreatePcdDatabaseCode(self, TemplateString(), TemplateString())\r
                     return True\r
@@ -4029,17 +4040,10 @@ class ModuleAutoGen(AutoGen):
 \r
         for File in self.AutoGenFileList:\r
             if GenC.Generate(File.Path, self.AutoGenFileList[File], File.IsBinary):\r
-                #Ignore Edk AutoGen.c\r
-                if self.AutoGenVersion < 0x00010005 and File.Name == 'AutoGen.c':\r
-                        continue\r
-\r
                 AutoGenList.append(str(File))\r
             else:\r
                 IgoredAutoGenList.append(str(File))\r
 \r
-        # Skip the following code for EDK I inf\r
-        if self.AutoGenVersion < 0x00010005:\r
-            return\r
 \r
         for ModuleType in self.DepexList:\r
             # Ignore empty [depex] section or [depex] section for SUP_MODULE_USER_DEFINED module\r
@@ -4090,50 +4094,86 @@ class ModuleAutoGen(AutoGen):
         return RetVal\r
 \r
     def GenModuleHash(self):\r
+        # Initialize a dictionary for each arch type\r
         if self.Arch not in GlobalData.gModuleHash:\r
             GlobalData.gModuleHash[self.Arch] = {}\r
+\r
+        # Early exit if module or library has been hashed and is in memory\r
+        if self.Name in GlobalData.gModuleHash[self.Arch]:\r
+            return GlobalData.gModuleHash[self.Arch][self.Name].encode('utf-8')\r
+\r
+        # Initialze hash object\r
         m = hashlib.md5()\r
+\r
         # Add Platform level hash\r
-        m.update(GlobalData.gPlatformHash)\r
+        m.update(GlobalData.gPlatformHash.encode('utf-8'))\r
+\r
         # Add Package level hash\r
         if self.DependentPackageList:\r
             for Pkg in sorted(self.DependentPackageList, key=lambda x: x.PackageName):\r
-                if Pkg.PackageName in GlobalData.gPackageHash[self.Arch]:\r
-                    m.update(GlobalData.gPackageHash[self.Arch][Pkg.PackageName])\r
+                if Pkg.PackageName in GlobalData.gPackageHash:\r
+                    m.update(GlobalData.gPackageHash[Pkg.PackageName].encode('utf-8'))\r
 \r
         # Add Library hash\r
         if self.LibraryAutoGenList:\r
             for Lib in sorted(self.LibraryAutoGenList, key=lambda x: x.Name):\r
                 if Lib.Name not in GlobalData.gModuleHash[self.Arch]:\r
                     Lib.GenModuleHash()\r
-                m.update(GlobalData.gModuleHash[self.Arch][Lib.Name])\r
+                m.update(GlobalData.gModuleHash[self.Arch][Lib.Name].encode('utf-8'))\r
 \r
         # Add Module self\r
-        f = open(str(self.MetaFile), 'r')\r
+        f = open(str(self.MetaFile), 'rb')\r
         Content = f.read()\r
         f.close()\r
         m.update(Content)\r
+\r
         # Add Module's source files\r
         if self.SourceFileList:\r
             for File in sorted(self.SourceFileList, key=lambda x: str(x)):\r
-                f = open(str(File), 'r')\r
+                f = open(str(File), 'rb')\r
                 Content = f.read()\r
                 f.close()\r
                 m.update(Content)\r
 \r
-        ModuleHashFile = path.join(self.BuildDir, self.Name + ".hash")\r
-        if self.Name not in GlobalData.gModuleHash[self.Arch]:\r
-            GlobalData.gModuleHash[self.Arch][self.Name] = m.hexdigest()\r
-        if GlobalData.gBinCacheSource:\r
-            if self.AttemptModuleCacheCopy():\r
-                return False\r
-        return SaveFileOnChange(ModuleHashFile, m.hexdigest(), True)\r
+        GlobalData.gModuleHash[self.Arch][self.Name] = m.hexdigest()\r
+\r
+        return GlobalData.gModuleHash[self.Arch][self.Name].encode('utf-8')\r
 \r
     ## Decide whether we can skip the ModuleAutoGen process\r
     def CanSkipbyHash(self):\r
-        if GlobalData.gUseHashCache:\r
-            return not self.GenModuleHash()\r
-        return False\r
+        # Hashing feature is off\r
+        if not GlobalData.gUseHashCache:\r
+            return False\r
+\r
+        # Initialize a dictionary for each arch type\r
+        if self.Arch not in GlobalData.gBuildHashSkipTracking:\r
+            GlobalData.gBuildHashSkipTracking[self.Arch] = dict()\r
+\r
+        # If library or Module is binary do not skip by hash\r
+        if self.IsBinaryModule:\r
+            return False\r
+\r
+        # .inc is contains binary information so do not skip by hash as well\r
+        for f_ext in self.SourceFileList:\r
+            if '.inc' in str(f_ext):\r
+                return False\r
+\r
+        # Use Cache, if exists and if Module has a copy in cache\r
+        if GlobalData.gBinCacheSource and self.AttemptModuleCacheCopy():\r
+            return True\r
+\r
+        # Early exit for libraries that haven't yet finished building\r
+        HashFile = path.join(self.BuildDir, self.Name + ".hash")\r
+        if self.IsLibrary and not os.path.exists(HashFile):\r
+            return False\r
+\r
+        # Return a Boolean based on if can skip by hash, either from memory or from IO.\r
+        if self.Name not in GlobalData.gBuildHashSkipTracking[self.Arch]:\r
+            # If hashes are the same, SaveFileOnChange() will return False.\r
+            GlobalData.gBuildHashSkipTracking[self.Arch][self.Name] = not SaveFileOnChange(HashFile, self.GenModuleHash(), True)\r
+            return GlobalData.gBuildHashSkipTracking[self.Arch][self.Name]\r
+        else:\r
+            return GlobalData.gBuildHashSkipTracking[self.Arch][self.Name]\r
 \r
     ## Decide whether we can skip the ModuleAutoGen process\r
     #  If any source file is newer than the module than we cannot skip\r