Re: express multiple output files in gnu make

[Wayne Throop]

: >     sh-2.04$ cat makefile
: >     x.c x.h: x.src; : building $@
: >     sh-2.04$ make x.c x.h
: >     : building x.c
: >     : building x.h
: > 
: >     sh-2.04$ cat makefile
: >     %.c %.h: %.src; : building $@
: >     sh-2.04$ make x.c x.h
: >     : building x.c
: >     make: Nothing to be done for `x.h'.

: This is expected behavior

That is, after all, why I said "consider these expected behaviors".

: the second example tells Make that both x.c and x.h are produced by
: the rule's command.  This is explained in the Make manual. 

Indeed it is.  That's pretty much *why* one would expect those behaviors.

: > If they are related by a stem, then you can use a pattern
: > rule as in the second case above; but what if they aren't? 

: Either make them related (by changing names or using % ingeniously),
: or you are out of luck. 

Do you have a reason why not to leave the names unrelated and use

    foo: bar;
    bar: baz; cmd

That is, is there a specific failure mode I'm overlooking?


Wayne Throop   address@hidden