linux-kernel - Re: [PATCH -mm] replacement for broken kbuild-dont-put-temp-files-in-the-source-tree.patch

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Date:	Sun, 29 Oct 2006 17:52:11 +0000 (UTC)
From:	Oleg Verych <olecom@...wer.upol.cz>
To:	linux-kernel@...r.kernel.org
Subject:  Re: [PATCH -mm] replacement for broken kbuild-dont-put-temp-files-in-the-source-tree.patch

On 2006-10-29, Andi Kleen wrote:
>> Why not use -o /dev/null, as Daniel Drake already suggested in [1]? In
>> both as-instr and ld-option, the tmp file is being deleted
>> unconditionally right after its creation anyways.
>
> Because then when the compilation runs as root some as versions
> will delete /dev/null on a error. This has happened in the past.

OK, but let users, who still build kernels as root, alone.

In `19-rc3/include/Kbuild.include', just below `as-instr' i see:
,--
|cc-option = $(shell if $(CC) $(CFLAGS) $(1) -S -o /dev/null -xc /dev/null \
|             > /dev/null 2>&1; then echo "$(1)"; else echo "$(2)"; fi ;)
|
|# cc-option-yn
|# Usage: flag := $(call cc-option-yn, -march=winchip-c6)
|cc-option-yn = $(shell if $(CC) $(CFLAGS) $(1) -S -o /dev/null -xc /dev/null \
|                 > /dev/null 2>&1; then echo "y"; else echo "n"; fi;)
`--
so, change to `-o /dev/null' in `as-instr' will just follow this.
____

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