Re: GNU Make 3.79, consolidating dependancy lines

[Tristan Van Berkom]

Karl Berry wrote:
[...]
> In fact, computed variable names with virtually that exact syntax are
> apparently supported.  See the Computed Names node in the manual,
> although I don't know if it will work in a pattern rule, such as:
>
> %.prg: $($(%prog.objs))
>         link -o $@ $^

This wont work because make variables are expanded in the preprocessing phase,
and % pattern rules are expanded only into the automatic variables that exists
are rule execution time (i.e. your $@ and $^).

Actualy I use this form:

%.prg:
        link -o $@ $^

While dependancies have already been sorted out using wildcards and
subst/patsubst et al. (but the meticulous makefile writer could
checkout make 3.80 and use the $(eval ...) function to generate rules
for exactly this purpose).

Cheers,
                       -Tristan