BUG: Always return positive integers to the OS on error. Windows error encoding is confused by negative return values.

1 files changed, 11 insertions, 1 deletions

diff --git a/Source/cmakemain.cxx b/Source/cmakemain.cxx
index 9e81a42..8d38f70 100644
--- a/Source/cmakemain.cxx
+++ b/Source/cmakemain.cxx
@@ -487,6 +487,16 @@ int do_cmake(int ac, char** av)
         }
       }
     }
-  return res;
+
+  // Always return a non-negative value.  Windows tools do not always
+  // interpret negative return values as errors.
+  if(res != 0)
+    {
+    return 1;
+    }
+  else
+    {
+    return 0;
+    }
 }