Re: Bug in $(call ...) ?

[Ken Smith]

Double dollar sign causes a single dollar sign literal to be present in
the string.  I don't think that is what you want here.  Also, if you
$(call) something which $(call)s another thing, the $(n) variables must
be passed along otherwise they will be lost.

I'm afraid your true intent is no clearer to me now than it was when I
read your first example.  Can you help me understand?

  Ken

On Mon, Dec 20, 2004 at 05:56:33PM +0300, Alexey Neyman wrote:
> Well, I'll use it, thanks. However, it seems that it's actually a 
> workaround. Perhaps this Makefile will illustrate better what I mean:
> 
> <<<<
> X = echo
> A = $($(1)) $$(1) $$(2)
> B := $(call A,X)
> C = echo $(1) $(2)
> 
> $(warning "$(value B)")
> $(warning "$(value C)")
> 
> all:
>         @echo '[$(call B,hi,lo)]'
>         @echo '[$(call C,hi,lo)]'
> >>>>
> 
> Note that the $(warning)s show that the values of B and C are the 
> same. Yet, the results of echo differ:
> 
> Makefile:6: "echo $(1) $(2)"
> Makefile:7: "echo $(1) $(2)"
> [echo $(1) $(2)]
> [echo hi lo]
> 
> 
> On Monday 20 December 2004 16:33, you wrote:
> > Perhaps the following modifications get you what you want.  I think
> > perhaps you are just missing the passthrough for the numbered 
> parameters
> > for B.
> > 
> > X = echo
> > A = $($(1)) $(2) $(3)
> > B = $(call A,X,$(1),$(2))
> > 
> > all:    
> >         @echo '[$(B)]'
> >         @echo '[$(call B,hi,lo)]'
> >         $(call B,hi,lo)
> > 
> >   Ken
> > 
> > On Mon, Dec 20, 2004 at 01:40:02PM +0300, Alexey Neyman wrote:
> > > Hi,
> > > 
> > > address@hidden:~/tmp> cat Makefile
> > > X = echo
> > > A = $($(1)) $$(1) $$(2)
> > > B = $(call A,X)
> > > 
> > > all:
> > >         @echo '[$(B)]'
> > >         @echo '[$(call B,hi,lo)]'
> > > address@hidden:~/tmp> make all
> > > [echo $(1) $(2)]
> > > [echo $(1) $(2)]
> > > 
> > > I thought the "$(call B,hi,lo)" should have evaluated to "echo hi 
> lo", 
> > > shouldn't it?
> > > 
> > > Regards,
> > > Alexey.
> > > 
> > > -- 
> > > Ah, an insult... a sometimes necessary and constructive release of 
> > > tension.
> > >                         -- Pkunks, SC2
> > > 
> > > 
> > > _______________________________________________
> > > Help-make mailing list
> > > address@hidden
> > > http://lists.gnu.org/mailman/listinfo/help-make
> > 
> 
> -- 
> All are welcome to our nest.
> We are Pkunk, we cannot help but love all.
>                         -- Pkunks, SC2