Re: print project compile date

[John Calcote]

On 8/31/2009 10:29 PM, Mike Shal wrote:
> On 9/1/09, John Calcote<address@hidden>  wrote:
>    
> >   Basically, you're telling us that you want a.c to compile every time you
> > build your project, so that you get the latest date/time stamp from the
> > latest build. I guess the exception to this might be that you only want to
> > "update" a.c if the program needs to be rebuilt for any other reason,
> > otherwise, you want make to act as it always does if everything is already
> > up to date - that is, do nothing.
> >
> >   Try adding this line to the *end* of your Makefile (untested):
> >
> >   a.c: $(APP)
> >      
> Wouldn't that cause a circular dependency? After all, the file with
> the date stamp must ultimately be linked into the application.
>    

Hi Mike,

Yes, of course you're right. It does introduce a circular dependency. 
But GNU make is smart enough to detect such cycles. I just hoped that it 
would build a.c before dropping the dependency. Alas, I tested it this 
morning, and it drops the dependency before building a.c - as it should, 
I suppose. :)

Anyway, your solution was much better.

Thanks,
John