[aspectc-user] Different aspect files in the directory

[Olaf Spinczyk]

Hi Dimple,

ac++/ag++ automatically searches all *.ah files in the project directory 
to make life easier for beginners. More experienced users can also use 
different mechanisms to select aspects that the weaver should take into 
account:

A) with the command line option -a <ah-name> the names of aspect header 
files can be listed explicitely. If there is at least one -a option in 
the ac++/ag++ command line, the weaver will not search in the project 
directory tree.

B) if you have the following directory structure ...

  root
    aspects1
      A.ah
      B.ah
    aspects2
      C.ah
      D.ah
    source
      X.cc
      Y.cc

    ... you can select the aspects A and B with "ag++ -p source -p 
aspects1 ..." and the aspects C and D with "ag++ -p source -p aspects2 ...".

BTW, you could also use the pure-variants tool from 
www.pure-systems.com. There you can select aspect headers based on a 
feature model. The tool creates a directory tree for you that only 
contains the aspects that are relevant for the selected system 
configuration. This works very well in our own OS product line 
development project CiAO.

Best regards,

Olaf


Dimple wrote:
>Hi Olaf,
>I have one question. If we have couple of aspect file like a.ah, b.ah ...
>representing various different functionalities we want to implement or you
>can say we have number of specialization files. Like in a product line
>architecture, for a particular product variant there can be different
>features sets. So a product variant can have one such specialization file
>like a.ah with some set of cross cutting concerns.
>Now I want to know is that is there a way to specify which specialization
>files to use. Means if we have all the file in that directory, how can we
>make compiler pick only a.ah and not b.ah file. May be some setting or
>something like that.
>Thanks,
>Dimple
>
>
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