[Patch] BaseTools/Build: Support python scripts in PREBUILD/POSTBUILD

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

From: Michael Kinney <michael.d.kinney@intel.com>

https://bugzilla.tianocore.org/show_bug.cgi?id=627

Add shell=True in Popen() calls to support direct execution of
python scripts

Cc: Liming Gao <liming.gao@intel.com>
Cc: Yonghong Zhu <yonghong.zhu@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Michael Kinney <michael.d.kinney@intel.com>
---
 BaseTools/Source/Python/build/build.py | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/BaseTools/Source/Python/build/build.py b/BaseTools/Source/Python/build/build.py
index cfd28a4b5b..1e14fb4dcc 100644
--- a/BaseTools/Source/Python/build/build.py
+++ b/BaseTools/Source/Python/build/build.py
@@ -1036,7 +1036,7 @@ class Build():
                 os.remove(self.PlatformBuildPath)
             if sys.platform == "win32":
                 args = ' && '.join((self.Prebuild, 'set > ' + PrebuildEnvFile))
-                Process = Popen(args, stdout=PIPE, stderr=PIPE)
+                Process = Popen(args, stdout=PIPE, stderr=PIPE, shell=True)
             else:
                 args = ' && '.join((self.Prebuild, 'env > ' + PrebuildEnvFile))
                 Process = Popen(args, stdout=PIPE, stderr=PIPE, shell=True)
@@ -1079,7 +1079,7 @@ class Build():
         if self.Postbuild:
             EdkLogger.info("\n- Postbuild Start -\n")
             if sys.platform == "win32":
-                Process = Popen(self.Postbuild, stdout=PIPE, stderr=PIPE)
+                Process = Popen(self.Postbuild, stdout=PIPE, stderr=PIPE, shell=True)
             else:
                 Process = Popen(self.Postbuild, stdout=PIPE, stderr=PIPE, shell=True)
             # launch two threads to read the STDOUT and STDERR
-- 
2.13.1.windows.2