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From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
To: Sam Ravnborg <sam@ravnborg.org>
Cc: Andrew Morton <akpm@osdl.org>,
	linuxppc64-dev <linuxppc64-dev@ozlabs.org>,
	Linux Kernel list <linux-kernel@vger.kernel.org>,
	Linus Torvalds <torvalds@osdl.org>
Subject: Re: [PATCH] ppc64: Implement a vDSO and use it for signal trampoline
Date: Tue, 01 Feb 2005 16:55:01 +1100	[thread overview]
Message-ID: <1107237301.5963.67.camel@gaston> (raw)
In-Reply-To: <20050201054149.GA8136@mars.ravnborg.org>


> Right hand side is evaluated only when left hand side is used.
> Also very usefull. Example just mocked up:
> cmd_vdso32_cc = $(CC) -T $^ -o $@
> 
> Doing late evaluation will cause correct replacement of $^ and $@ when
> used. When cmd_vdso_32 is defined make does not know the desired values
> for $^ and $@ - this is only known when cmd_vdso_32 is actually used.
> 
> Hope this clarifies it.

Definitely, thanks.

Ben.



      reply	other threads:[~2005-02-01  5:55 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2005-01-31  6:04 Benjamin Herrenschmidt
2005-01-31 19:27 ` Sam Ravnborg
2005-01-31 23:15   ` Benjamin Herrenschmidt
2005-02-01  0:38   ` Benjamin Herrenschmidt
2005-02-01  5:41     ` Sam Ravnborg
2005-02-01  5:55       ` Benjamin Herrenschmidt [this message]

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