Re: ASDF: alternative system configurations

not the original question, but take a situation where i have four system
components a,b,c,d and for the purposes of compiling the system the depandancy is

       a
      / \
      b c
      \ /
       d

which means that the builder needs to specify either a and b, or a and c to
build. on the other hand, when it comes to documenting or releasing, one would
like to specify a and b and c and not have to worry about what
conditionalization has done to the effective expression of the system structure.

...

Nikodemus Siivola wrote:
> 
> On 9 Apr 2003, Marco Baringer wrote:
> 
> > what's wrong with:
> >
> > :components ((:file "render" #+cl-sdl :depends-on #+cl-sdl ("window"))
> >      #+cl-sdl(:file "window"))
> 
> It seems that CL-SDL does not add itself to *features*, and pushing it
> there manually doesn't seem much of an improvement over two systems...
> 
> > for more complex things it helps to define modules and condititonally
> > include those.
> 
> Could you give an example? I have a hunch that in the future I will be
> depending on the presence of a lot of things, but can actually do without
> most of them...
> 
> Thanks,
> 
>  -- Nikodemus
> 
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