[Patch] BaseTools: Library PCD type will inherit from the driver

[Yonghong Zhu <yonghong.zhu@intel.com>]

From: Yunhua Feng <yunhuax.feng@intel.com>

If a PCD is not referenced in global PCD section of DSC file at all,
but is referenced in module scope, then the default PCD type for libs
should be the module scoped PCD type.

Fixes: https://bugzilla.tianocore.org/show_bug.cgi?id=901
Cc: Liming Gao <liming.gao@intel.com>
Cc: Yonghong Zhu <yonghong.zhu@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Yunhua Feng <yunhuax.feng@intel.com>
---
 BaseTools/Source/Python/AutoGen/AutoGen.py | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/BaseTools/Source/Python/AutoGen/AutoGen.py b/BaseTools/Source/Python/AutoGen/AutoGen.py
index f29df21..1715101 100644
--- a/BaseTools/Source/Python/AutoGen/AutoGen.py
+++ b/BaseTools/Source/Python/AutoGen/AutoGen.py
@@ -428,10 +428,26 @@ class WorkspaceAutoGen(AutoGen):
                                 if key in PlatformModule.Pcds:
                                     PcdInPlatform = PlatformModule.Pcds[key]
                                     if PcdInPlatform.Type:
                                         BuildData.Pcds[key].Type = PcdInPlatform.Type
                                         BuildData.Pcds[key].Pending = False
+                            else:
+                                #Pcd used in Library, Pcd Type from reference module if Pcd Type is Pending
+                                if BuildData.Pcds[key].Pending:
+                                    MGen = ModuleAutoGen(self, BuildData.MetaFile, Target, Toolchain, Arch, self.MetaFile)
+                                    if MGen and MGen.IsLibrary:
+                                        if MGen in PGen.LibraryAutoGenList:
+                                            ReferenceModules = MGen._ReferenceModules
+                                            for ReferenceModule in ReferenceModules:
+                                                if ReferenceModule.MetaFile in Platform.Modules:
+                                                    RefPlatformModule = Platform.Modules[str(ReferenceModule.MetaFile)]
+                                                    if key in RefPlatformModule.Pcds:
+                                                        PcdInReferenceModule = RefPlatformModule.Pcds[key]
+                                                        if PcdInReferenceModule.Type:
+                                                            BuildData.Pcds[key].Type = PcdInReferenceModule.Type
+                                                            BuildData.Pcds[key].Pending = False
+                                                            break
 
                         if TAB_PCDS_DYNAMIC_EX in BuildData.Pcds[key].Type:
                             if BuildData.IsBinaryModule:
                                 BinaryPcdDict[TAB_PCDS_DYNAMIC_EX].add((BuildData.Pcds[key].TokenCName, BuildData.Pcds[key].TokenSpaceGuidCName))
                             else:
-- 
2.6.1.windows.1