[Patch 1/1] BaseTools/PlatformAutoGen: MAKE_FLAGS and MAKE_PATH fixes

["Michael D Kinney" <michael.d.kinney@intel.com>]

REF: https://bugzilla.tianocore.org/show_bug.cgi?id=3312

Update parsing of MAKE_FLAGS in DSC [BuildOptions] sections
to split the flags into a list to be compatible with
running the make command using Popen().  Parsing MAKE_FLAGS
from tools_def.txt already uses _SplitOption().  This change
uses the same _SplitOption() method for MAKE_FLAGS from a
DSC [BuildOptions] section.

Also update the parsing of MAKE_PATH to support MAKE_PATH
from tools_def.txt or the DSC [BuildOptions] section.  MAKE_PATH
in DSC [BuildOptions] section is higher priority than MAKE_PATH
in tools_def.txt.

Cc: Bob Feng <bob.c.feng@intel.com>
Cc: Liming Gao <gaoliming@byosoft.com.cn>
Cc: Yuwei Chen <yuwei.chen@intel.com>
Signed-off-by: Michael D Kinney <michael.d.kinney@intel.com>
---
 .../Source/Python/AutoGen/PlatformAutoGen.py  | 36 +++++++++++--------
 1 file changed, 21 insertions(+), 15 deletions(-)

diff --git a/BaseTools/Source/Python/AutoGen/PlatformAutoGen.py b/BaseTools/Source/Python/AutoGen/PlatformAutoGen.py
index 7d8e7b3c7cc1..c16f2e4cd8b7 100644
--- a/BaseTools/Source/Python/AutoGen/PlatformAutoGen.py
+++ b/BaseTools/Source/Python/AutoGen/PlatformAutoGen.py
@@ -1,7 +1,7 @@
 ## @file
 # Create makefile for MS nmake and GNU make
 #
-# Copyright (c) 2019, Intel Corporation. All rights reserved.<BR>
+# Copyright (c) 2019 - 2021, Intel Corporation. All rights reserved.<BR>
 #  Copyright (c) 2020, ARM Limited. All rights reserved.<BR>
 # SPDX-License-Identifier: BSD-2-Clause-Patent
 #
@@ -805,20 +805,26 @@ class PlatformAutoGen(AutoGen):
     #
     @cached_property
     def BuildCommand(self):
-        RetVal = []
-        if "MAKE" in self.ToolDefinition and "PATH" in self.ToolDefinition["MAKE"]:
-            RetVal += _SplitOption(self.ToolDefinition["MAKE"]["PATH"])
-            if "FLAGS" in self.ToolDefinition["MAKE"]:
-                NewOption = self.ToolDefinition["MAKE"]["FLAGS"].strip()
-                if NewOption != '':
-                    RetVal += _SplitOption(NewOption)
-            if "MAKE" in self.EdkIIBuildOption:
-                if "FLAGS" in self.EdkIIBuildOption["MAKE"]:
-                    Flags = self.EdkIIBuildOption["MAKE"]["FLAGS"]
-                    if Flags.startswith('='):
-                        RetVal = [RetVal[0]] + [Flags[1:]]
-                    else:
-                        RetVal.append(Flags)
+        if "MAKE" in self.EdkIIBuildOption and "PATH" in self.EdkIIBuildOption["MAKE"]:
+            # MAKE_PATH in DSC [BuildOptions] section is higher priority
+            Path = self.EdkIIBuildOption["MAKE"]["PATH"]
+            if Path.startswith('='):
+                Path = Path[1:].strip()
+            RetVal = _SplitOption(Path)
+        elif "MAKE" in self.ToolDefinition and "PATH" in self.ToolDefinition["MAKE"]:
+            RetVal = _SplitOption(self.ToolDefinition["MAKE"]["PATH"])
+        else:
+            return []
+        if "MAKE" in self.ToolDefinition and "FLAGS" in self.ToolDefinition["MAKE"]:
+            NewOption = self.ToolDefinition["MAKE"]["FLAGS"].strip()
+            if NewOption != '':
+                RetVal += _SplitOption(NewOption)
+        if "MAKE" in self.EdkIIBuildOption and "FLAGS" in self.EdkIIBuildOption["MAKE"]:
+            Flags = self.EdkIIBuildOption["MAKE"]["FLAGS"]
+            if Flags.startswith('='):
+                RetVal = [RetVal[0]] + _SplitOption(Flags[1:].strip())
+            else:
+                RetVal = RetVal + _SplitOption(Flags.strip())
         return RetVal
 
     ## Get tool chain definition
-- 
2.31.1.windows.1