[Patch 1/1] BaseTools: Fix build failure when multiple build targets given

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

BZ: https://bugzilla.tianocore.org/show_bug.cgi?id=2371

This patch is to fix a regression issue that build fails
if multiple build targets given.

Two changes cause this regression issue.
One is AutoGen object __hash__ function only
hash file path and arch, missing ToolChain and build target.

The other is changing the multiple-thread-genfds function as default
build behavior. To generate the genffs command to Makefile, there
is a global data set is used, GenFdsGlobalVariable, which cause build
tool use the data of first build-target build in
the second build-target build.

Cc: Liming Gao <liming.gao@intel.com>
Cc: Steven Shi <steven.shi@intel.com>
Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Bob Feng <bob.c.feng@intel.com>
---
 BaseTools/Source/Python/AutoGen/ModuleAutoGen.py   | 2 +-
 BaseTools/Source/Python/AutoGen/PlatformAutoGen.py | 2 +-
 BaseTools/Source/Python/build/build.py             | 2 ++
 3 files changed, 4 insertions(+), 2 deletions(-)

diff --git a/BaseTools/Source/Python/AutoGen/ModuleAutoGen.py b/BaseTools/Source/Python/AutoGen/ModuleAutoGen.py
index 74662d1b52bc..aad591de65f0 100755
--- a/BaseTools/Source/Python/AutoGen/ModuleAutoGen.py
+++ b/BaseTools/Source/Python/AutoGen/ModuleAutoGen.py
@@ -268,11 +268,11 @@ class ModuleAutoGen(AutoGen):
     #
     #   @retval   int Hash value of the module file path and arch
     #
     @cached_class_function
     def __hash__(self):
-        return hash((self.MetaFile, self.Arch))
+        return hash((self.MetaFile, self.Arch, self.ToolChain,self.BuildTarget))
     def __repr__(self):
         return "%s [%s]" % (self.MetaFile, self.Arch)
 
     # Get FixedAtBuild Pcds of this Module
     @cached_property
diff --git a/BaseTools/Source/Python/AutoGen/PlatformAutoGen.py b/BaseTools/Source/Python/AutoGen/PlatformAutoGen.py
index 4c3cdf82d57f..7bd24dad42f8 100644
--- a/BaseTools/Source/Python/AutoGen/PlatformAutoGen.py
+++ b/BaseTools/Source/Python/AutoGen/PlatformAutoGen.py
@@ -146,11 +146,11 @@ class PlatformAutoGen(AutoGen):
     #
     #   @retval   int Hash value of the platform file path and arch
     #
     @cached_class_function
     def __hash__(self):
-        return hash((self.MetaFile, self.Arch))
+        return hash((self.MetaFile, self.Arch,self.ToolChain,self.BuildTarget))
     @cached_class_function
     def __repr__(self):
         return "%s [%s]" % (self.MetaFile, self.Arch)
 
     ## Create autogen code for platform and modules
diff --git a/BaseTools/Source/Python/build/build.py b/BaseTools/Source/Python/build/build.py
index 8a8e32e496f8..77b46341b5ad 100755
--- a/BaseTools/Source/Python/build/build.py
+++ b/BaseTools/Source/Python/build/build.py
@@ -56,10 +56,11 @@ import multiprocessing as mp
 from multiprocessing import Manager
 from AutoGen.DataPipe import MemoryDataPipe
 from AutoGen.ModuleAutoGenHelper import WorkSpaceInfo, PlatformInfo
 from GenFds.FdfParser import FdfParser
 from AutoGen.IncludesAutoGen import IncludesAutoGen
+from GenFds.GenFds import resetFdsGlobalVariable
 
 ## standard targets of build command
 gSupportedTarget = ['all', 'genc', 'genmake', 'modules', 'libraries', 'fds', 'clean', 'cleanall', 'cleanlib', 'run']
 
 ## build configuration file
@@ -2205,10 +2206,11 @@ class Build():
         SaveFileOnChange(self.PlatformBuildPath, '# DO NOT EDIT \n# FILE auto-generated\n', False)
         for BuildTarget in self.BuildTargetList:
             GlobalData.gGlobalDefines['TARGET'] = BuildTarget
             index = 0
             for ToolChain in self.ToolChainList:
+                resetFdsGlobalVariable()
                 GlobalData.gGlobalDefines['TOOLCHAIN'] = ToolChain
                 GlobalData.gGlobalDefines['TOOL_CHAIN_TAG'] = ToolChain
                 GlobalData.gGlobalDefines['FAMILY'] = self.ToolChainFamily[index]
                 index += 1
                 ExitFlag = threading.Event()
-- 
2.20.1.windows.1