Class BuildError

              object --+        
                       |        
exceptions.BaseException --+    
                           |    
        exceptions.Exception --+
                               |
                              BuildError

Errors occuring while building.

BuildError have the following attributes:

    Information about the cause of the build error:
    -----------------------------------------------

    errstr : a description of the error message

    status : the return code of the action that caused the build
             error. Must be set to a non-zero value even if the
             build error is not due to an action returning a
             non-zero returned code.

    exitstatus : SCons exit status due to this build error.
                 Must be nonzero unless due to an explicit Exit()
                 call.  Not always the same as status, since
                 actions return a status code that should be
                 respected, but SCons typically exits with 2
                 irrespective of the return value of the failed
                 action.

    filename : The name of the file or directory that caused the
               build error. Set to None if no files are associated with
               this error. This might be different from the target
               being built. For example, failure to create the
               directory in which the target file will appear. It
               can be None if the error is not due to a particular
               filename.

    exc_info : Info about exception that caused the build
               error. Set to (None, None, None) if this build
               error is not due to an exception.


    Information about the cause of the location of the error:
    ---------------------------------------------------------

    node : the error occured while building this target node(s)
    
    executor : the executor that caused the build to fail (might
               be None if the build failures is not due to the
               executor failing)
    
    action : the action that caused the build to fail (might be
             None if the build failures is not due to the an
             action failure)

    command : the command line for the action that caused the
              build to fail (might be None if the build failures
              is not due to the an action failure)
    

x.__init__(...) initializes x; see x.__class__.__doc__ for signature

str(x)