On Thu, Nov 14, 2002 at 03:21:41PM -0800, gk wrote:
> At 11:37 AM 11/14/2002 -0500, Justin Chen-Wells wrote:
> >How can I get this to work automatically, so that you do not have to
> >do a "make include1" before making other targets?
>
> I think you need to tell make that include2 depends on include1:
>
> include2: include1
> @echo "B := $(A)" > $@
>
>
> - Greg Keraunen
>
I tried that, it doesn't work. My script now looks like this:
-include include1 include2
display:
@echo A=$(A)
@echo B=$(B)
include1:
@echo "A := hello" > $@
include2: include1
@echo "B := $(A)" > $@
clean:
rm include1 include2
In real life I've hacked it to work like this:
include2: include1
@echo "B := ^(A)" | tr ^ $$> $@
which winds up writing a literal $(A) to the generated file.
This also shows my ignorance about the right way to escape $
in this case. I had wanted to write
@echo "B := $$(A)" > $@
but that doesn't work, so I tricked make with the ^/tr hack.
I'd like to fix that hack, or better, fix the generated file so
that I can just use ordinary $(A) in the command to generate the
second include.
Justin
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