linux-kernel - Re: [PATCH 13/20] Kbuild, lto: Set TMPDIR for LTO v2

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Date:	Tue, 18 Feb 2014 06:35:41 -0800
From:	"H. Peter Anvin" <hpa@...or.com>
To:	Andi Kleen <andi@...stfloor.org>, linux-kernel@...r.kernel.org
CC:	sam@...nborg.org, x86@...nel.org, linux-kbuild@...r.kernel.org,
	Andi Kleen <ak@...ux.intel.com>
Subject: Re: [PATCH 13/20] Kbuild, lto: Set TMPDIR for LTO v2

On 02/18/2014 06:28 AM, Andi Kleen wrote:
>  
> +ifdef CONFIG_LTO
> +# LTO gcc creates a lot of files in TMPDIR, and with /tmp as tmpfs
> +# it's easy to drive the machine OOM. Use the object directory
> +# instead
> +TMPDIR ?= ${objtree}
> +export TMPDIR
> +endif
> +

We still prefer $(...) in Makefiles, no?

	-hpa


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