Re: %-style pattern rules

[Lorenzo Bettini]

BeN [F1233 121D312] wrote:
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> Lorenzo Bettini wrote:
> > about rules of the shape, e.g.,
> >
> > %.txt: %.tt
> >
> > how else could I implement those make rules?
>
> I guess so called old-fashioned style of implicit rules would do:
>
> e.g:
>
> .SUFFIXES: .txt .tt
>
> all: t.txt
>
> .tt.txt:
>     cp -v $< $@

and what if I need two files (with two different extensions) depend on a 
single file?

for instance I use GNU gengetopt to generate command line parsers: I 
write a .ggo file and process it this file with gengetopt in order to 
create a .h and a .c

how would I transform this rule?

%.c %.h: %.ggo

Moreover, this rule has also the problem of not working with parallel 
makes (e.g., make -j2)

thanks in advance
        Lorenzo

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Lorenzo Bettini, PhD in Computer Science, DSI, Univ. di Firenze
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