1.1 --- a/ambuild2/frontend/amb2/gen.py	Sat Dec 28 10:21:31 2013 -0500
     1.2 +++ b/ambuild2/frontend/amb2/gen.py	Sat Dec 28 10:21:44 2013 -0500
     1.3 @@ -595,7 +595,14 @@
     1.4    def addFolder(self, context, folder):
     1.5      return self.generateFolder(context.localFolder, folder)
     1.6  
     1.7 -  def addShellCommand(self, context, inputs, argv, outputs, folder=-1, dep_type=None):
     1.8 +  def addShellCommand(self,
     1.9 +                      context,
    1.10 +                      inputs,
    1.11 +                      argv,
    1.12 +                      outputs,
    1.13 +                      folder=-1,
    1.14 +                      dep_type=None,
    1.15 +                      weak_inputs=[]):
    1.16      if folder is -1:
    1.17        folder = context.localFolder
    1.18  
    1.19 @@ -620,7 +627,8 @@
    1.20        folder = folder,
    1.21        data = data,
    1.22        inputs = inputs,
    1.23 -      outputs = outputs
    1.24 +      outputs = outputs,
    1.25 +      weak_inputs = weak_inputs
    1.26      )
    1.27  
    1.28    def addConfigureFile(self, context, path):

     2.1 --- a/ambuild2/frontend/base_gen.py	Sat Dec 28 10:21:31 2013 -0500
     2.2 +++ b/ambuild2/frontend/base_gen.py	Sat Dec 28 10:21:44 2013 -0500
     2.3 @@ -122,8 +122,15 @@
     2.4    def AddCopy(self, source, output_path):
     2.5      return self.generator.addCopy(self, source, output_path)
     2.6  
     2.7 -  def AddCommand(self, inputs, argv, outputs, dep_type=None):
     2.8 -    return self.generator.addShellCommand(self, inputs, argv, outputs, dep_type=dep_type)
     2.9 +  def AddCommand(self, inputs, argv, outputs, dep_type=None, weak_inputs=[]):
    2.10 +    return self.generator.addShellCommand(
    2.11 +      self,
    2.12 +      inputs,
    2.13 +      argv,
    2.14 +      outputs,
    2.15 +      dep_type = dep_type,
    2.16 +      weak_inputs = weak_inputs
    2.17 +    )
    2.18  
    2.19    def AddConfigureFile(self, path):
    2.20      return self.generator.addConfigureFile(self, path)
    2.21 @@ -236,7 +243,7 @@
    2.22    def addCopy(self, context, source, output_path):
    2.23      raise Exception('Must be implemented!')
    2.24  
    2.25 -  def addShellCommand(self, context, inputs, argv, outputs, dep_type=None):
    2.26 +  def addShellCommand(self, context, inputs, argv, outputs, dep_type=None, weak_inputs=[]):
    2.27      raise Exception('Must be implemented!')
    2.28  
    2.29    def addConfigureFile(self, context, path):