linux-kernel - Re: [PATCH v2] parisc: dont unconditionally override CROSS

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Date:	Tue, 28 Feb 2012 01:06:20 -0500
From:	Mike Frysinger <vapier@...too.org>
To:	James Bottomley <jbottomley@...allels.com>
Cc:	Paul Gortmaker <paul.gortmaker@...driver.com>,
	"kyle@...artin.ca" <kyle@...artin.ca>,
	"deller@....de" <deller@....de>,
	"dave.anglin@...l.net" <dave.anglin@...l.net>,
	"linux-parisc@...r.kernel.org" <linux-parisc@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"linux-next@...r.kernel.org" <linux-next@...r.kernel.org>
Subject: Re: [PATCH v2] parisc: dont unconditionally override CROSS_COMPILE for 64 bit.

On Monday 27 February 2012 22:17:01 James Bottomley wrote:
> On Mon, 2012-02-27 at 20:04 -0500, Mike Frysinger wrote:
> > On Monday 27 February 2012 17:03:10 James Bottomley wrote:
> > > --- a/arch/parisc/Makefile
> > > +++ b/arch/parisc/Makefile
> > > 
> > > -CROSS_COMPILE	:= hppa64-linux-gnu-
> > > +
> > > +# if no default set, try to find the corresponding 64 bit compiler
> > > +ifeq ($(CROSS_COMPILE),)
> > > +CROSS_COMPILE	:= $(shell $(CC) -dumpmachine | sed
> > > s/hppa-\\\(.*\\\)/hppa64-\\1-/) +endif
> > 
> > fails when using "hppa2.0-xxx".  perhaps:
> > CROSS_COMPILE ?= $(shell $(CC) -dumpmachine | sed
> > 's/^hppa[^-]*-/hppa64-/')
> > 
> > don't even need the ifeq check then
> 
> How is that different from Carlos' suggestion?

sorry, but i'm not seeing any e-mails from Carlos in this thread.  what is his 
suggestion ?

> The reason it doesn't work is the same ... CROSS_COMPILE is defined to be
> empty.

my suggestion was purely an incremental improvement on the patch you posted.  
it improves two things:
	- detection when the default tuple is hppa2.0-xxx rather than hppa-xxx
	- one line for set-variable-only-when-its-unset rather than three lines
-mike

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