Re: Help needed writing a rules.

[Paul Smith]

On Mon, 2007-01-08 at 14:37 +0100, Pelle Svensson wrote:

> src-files := A/foo.c A/bar.c
> dst-files := B/foo.c B/bar.c
> 
> all: $(dst-files)
> 
> $(dst-files) : $(src-files)
>       mkdir -p $(dir $@)
>       cp -l $< $@

Yeah, that won't do what you want.

A rule like this:

  a b c d : e f g h

is shorthand for this:

  a : e f g h
  b : e f g h
  c : e f g h
  d : e f g h

You can write a pattern rule to do what you want:

B/%.c : A/%.c
        mkdir -p $(@D)
        cp -l $< $@

all: $(dst-files)

-- 
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 Paul D. Smith <address@hidden>          Find some GNU make tips at:
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