Re: how exactly the makefiles are remade ?

[Cristian Zoicas]

> %% Cristian Zoicas <address@hidden> writes:
>
>   cz> xxxx: gen.XXXX
>
>   cz> gen.XXXX:
>   cz>         @echo generating xxxx
>   cz>         @echo 'OBJECTS := a1.o b1.o b3.o' > xxxx;
>
> This set of rules is wrong.
>

Ok. It seems that I must change my makefile, but
it would  be very nice if make would report such
errors.

Cristi


> There is no rule to actually update xxxx (from make's perspective) so it
> doesn't re-exec.
>
> You have to write it like this:
>
>  xxxx:
>          @echo generating $@
>          @echo 'OBJECTS := a1.o b1.o b3.o' > $@;
>
> Remember the Second Rule of Makefiles.
>
>
> If you enable debugging with -d you'll see that with your makefile, make
> is never re-exec'd which is why the new value is not seen.
>
> --
> -------------------------------------------------------------------------------
>  Paul D. Smith <address@hidden>          Find some GNU make tips at:
>  http://www.gnu.org                      http://make.paulandlesley.org
>  "Please remain calm...I may be mad, but I am a professional." --Mad Scientist
>