Re: 'How makefiles are remade'

[Jim]

Jim wrote:

> Noel Yap wrote:
>
> > >
> That would be fine, if that even worked, that would probalby solve about 
> 90% of the problems just by cleverly odering the includes... but, as I 
> started, the first attached makefile fails, and it includes 'ticks' 
> which if Makefile or one of the other touchable things changes, remakes 
> ticks, which should cause a reload with the current, updated value. Then 
> x is included, and again, x needs to be updated, which will cause x to 
> be regenerated with the current value of ticks, which in turn should do 
> the same for y....
>
> but this is not what happens, and what you're really saying is that only 
> the LAST included file can be re-loaded, since ALL includes are read 
> before their dependancies are even checked.
>
> And THAT is not at all what the documentation indicates, it says -
>
> " if any have actually been changed, make starts with a clean slate and 
> reads all the makefiles over agai"
>
> if ANY changed, clean all, and reload all again...
Even failing that it doesn't work... I can add at the end of a made 
target...

$(makefile): $(dependancies)
        echo do some stuff
        exec $(MAKE)
        /bin/false
        exit


after doing stuff to make the makefile portion, exec make, however, even 
under a linux system this doesn't work, because it's still launched as a 
shell process /bin/sh -c exec ... no big deal, but it's not an exec over 
the initial make, and there's no way that method would work for windows.

/bin/false very *nix dependant, and it works, but it's causes all parent 
makes to also abort with error.  (an interesting note though, they do 
return the wrong error, the first is error 1 from false, the rest are 
error 2 (file not found) from the makefile having not been found in the 
first place... (really that's entirely an assumption of why it would change)

exit hmm... /bin/sh -c exit; and so the spawned shell exits.


Is there any way to cause make to exit without error?

> > Noel
>
>
>
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