Re: Simulating multiple wildcards in a match using .SECONDEXPANSION?

[Danny Boelens]

Michael R. Head wrote:
> On Mon, 2009-04-06 at 14:15 +0200, Danny Boelens wrote:
> > Michael R. Head wrote:
> > > I'm wondering if anyone has any suggestions on improving it. At a
> > > minimum, I'd like to get rid of the foreachs in the targets.
>>
> > You can do that because you know how you constructed the cross product 
> > targets. In your case: if you replace the underscore ('_') with a space 
> > (' '), the cross product target falls apart into its components again:
>
> True. But spaces in filenames are evil!

I agree. But I have a feeling you missed my point there. The thing is 
that your cross product files still have the underscore ('_') in their 
filename, so there won't be any spaces in filenames on disk. But at the 
same time the subst call can help in getting a (Makefile internal if you 
want) list with the a and b part of the cross product.

So for example you'll still have 'a1_b4' on disk, but 'a1 b4' after the 
subst to work with in your Makefile and get the prerequisites without 
the foreach stuff.

Bottom line: no evil spaces in filenames!

Anyway, that's all rather irrelevant if you like the other solution :-)

Best regards,
Danny