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Re: PATCH: Re: duplicate targets in Makefile rule

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From: Adam Spiers <adam@xxxxxxxxxx>
To: zsh workers mailing list <zsh-workers@xxxxxxxxxxxxxx>
Subject: Re: PATCH: Re: duplicate targets in Makefile rule
Date: Mon, 21 Feb 2000 10:39:23 +0000
In-reply-to: <E12Mpkr-00069S-00@xxxxxxxxxxxxxxxxxx>; from zefram@xxxxxxxx on Mon, Feb 21, 2000 at 10:07:49AM +0000
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Reply-to: Adam Spiers <adam@xxxxxxxxxx>

Zefram (zefram@xxxxxxxx) wrote:
> Adam Spiers wrote:
> >> Not portable: $< does not portably exist
> >
> >*sigh* You learn something every day.  Why is it not meaningful
> >though, out of curiosity?
> 
> There may be many (or no) dependencies in an explicit rule, whereas $<
> is defined (for an implicit rule) to expand to the exactly one dependency.

I see.  I've only ever used GNU make, so I'd unconsciously assumed
that what the info pages say would be true for most makes:

  `$<'
       The name of the first dependency.  If the target got its commands
       from an implicit rule, this will be the first dependency added by
       the implicit rule (*note Implicit Rules::.).

References:
- PATCH: Re: duplicate targets in Makefile rule
  - From: Adam Spiers
- Re: PATCH: Re: duplicate targets in Makefile rule
  - From: Zefram

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