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Re: Initialization targets

From: Rafael Garabato
Subject: Re: Initialization targets
Date: Wed, 16 Jan 2008 16:02:45 -0200

Hi ken,

    Thanks for the tip, it looks advanced... I like it. However, if I execute "make all", wouldn't this execute the always rule twice. Once for dep1 and once for dep2?


On Jan 16, 2008 3:43 PM, Ken Smith <address@hidden> wrote:
On Jan 16, 2008 7:14 AM, Rafael Garabato <address@hidden> wrote:

>        I would like to know if it exists a way to define a target that will
> always be executed once and prior to any other target,  regardless of the
> target that is specified.

As Paul said, the only way to do this is to make always a prerequisite
of every target.  It turns out that it isn't that hard to do.

deps := dep1 dep2

all: $(deps);
       echo all

       echo dep1

       echo dep2

# make always a prerequisite of every target listed in $(deps)
$(foreach d,$(deps),$(eval $(d): always))

.PHONY: always
       echo always


Making always a .PHONY target ensures that it is run every time the
makefile is run.


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