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Re: simple assignment of target-specific variables
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From: |
Dmitry Goncharov |
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Subject: |
Re: simple assignment of target-specific variables |
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Date: |
Sun, 28 Jun 2020 22:33:41 -0400 |
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User-agent: |
Mutt/1.5.21 (2010-09-15) |
On Tue, Jun 09, 2020 at 09:36:43AM -0700, David Boyce wrote:
> On Tue, Jun 9, 2020 at 9:21 AM Dmitry Goncharov <dgoncharov@users.sf.net>
> wrote:
> > You mean for target specific simple variable memory is allocated and
> > the variable is initialized only if the target is built, right?
> Yes, that's the suggestion I was making though I don't know the innards of
> make well enough to know how hard it would be.
After further thinking i came to the following example.
a:=1
bat: wom:=$(a)
a:=2
bat:; @echo wom=$(wom)
If make postpones initialization of wom until bat recipe has to run then the
value of wom will be 2. This would be a breaking change.
regards, Dmitry