[PATCH v2] BaseTools/Python: sys.exit(1) when error occurred

["Irene Park" <ipark@nvidia.com>]

From: Irene Park <ipark@nvidia.com>

AutoGen manager/workers halt the progress when an error occurs but
doesn't propagate the error code to main and makes main sys.exit(0)
and gets the build system unable to catch the occurrence of an error.
This change informs main with an error when a progress is halted and
helps main sys.exit(1).

Signed-off-by: Irene Park <ipark@nvidia.com>
---
 BaseTools/Source/Python/build/build.py | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/BaseTools/Source/Python/build/build.py b/BaseTools/Source/Python/build/build.py
index ed3a3b9..1ab1e60 100755
--- a/BaseTools/Source/Python/build/build.py
+++ b/BaseTools/Source/Python/build/build.py
@@ -880,7 +880,10 @@ class Build():
 
             self.AutoGenMgr.join()
             rt = self.AutoGenMgr.Status
-            return rt, 0
+            err = 0
+            if not rt:
+                err = UNKNOWN_ERROR
+            return rt, err
         except FatalError as e:
             return False, e.args[0]
         except:
@@ -2724,4 +2727,3 @@ if __name__ == '__main__':
     ## 0-127 is a safe return range, and 1 is a standard default error
     if r < 0 or r > 127: r = 1
     sys.exit(r)
-
-- 
2.7.4