[Patch 1/1] BaseTools: Fixed the issue of the CFlag for compile PcdValueInit.c

["Bob Feng" <bob.c.feng@intel.com>]

This issue happens when using Structured PCD.
Build tool use set to store the cflags for compile PcdValueInit.c,
that is the order of cflags is disorder.

This patch make -U, /U flags appear before -D, /D

Cc: Liming Gao <liming.gao@intel.com>
Signed-off-by: Bob Feng <bob.c.feng@intel.com>
---
 BaseTools/Source/Python/Workspace/DscBuildData.py | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/BaseTools/Source/Python/Workspace/DscBuildData.py b/BaseTools/Source/Python/Workspace/DscBuildData.py
index 9f65ad54257d..985f8775259d 100644
--- a/BaseTools/Source/Python/Workspace/DscBuildData.py
+++ b/BaseTools/Source/Python/Workspace/DscBuildData.py
@@ -2666,11 +2666,12 @@ class DscBuildData(PlatformBuildClassObject):
             if len(ArchBuildOptions.keys()) == 1:
                 BuildOptions['COMMON'] |= (list(ArchBuildOptions.values())[0])
             elif len(ArchBuildOptions.keys()) > 1:
                 CommonBuildOptions = reduce(lambda x,y: x&y, ArchBuildOptions.values())
                 BuildOptions['COMMON'] |= CommonBuildOptions
-            ValueList = list(BuildOptions['COMMON'])
+            ValueList = [item for item in BuildOptions['COMMON'] if item.startswith((r"/U","-U"))]
+            ValueList.extend([item for item in BuildOptions['COMMON'] if item.startswith((r"/D", "-D"))])
             CC_FLAGS += " ".join(ValueList)
         MakeApp += CC_FLAGS
 
         if sys.platform == "win32":
             MakeApp = MakeApp + PcdMakefileEnd
-- 
2.20.1.windows.1