linux-kernel - Re: [PATCH] ld-version: Fix awk regex compile failure

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Date:	Thu, 10 Mar 2016 23:19:57 +0530
From:	Sudip Mukherjee <sudipm.mukherjee@...il.com>
To:	James Hogan <james.hogan@...tec.com>,
	Ralf Baechle <ralf@...ux-mips.org>,
	Michal Marek <mmarek@...e.com>,
	Andi Kleen <ak@...ux.intel.com>,
	Geert Uytterhoeven <geert@...ux-m68k.org>
CC:	"Michael S. Tsirkin" <mst@...hat.com>, linux-mips@...ux-mips.org,
	linux-kbuild@...r.kernel.org, linux-kernel@...r.kernel.org,
	stable@...r.kernel.org
Subject: Re: [PATCH] ld-version: Fix awk regex compile failure

On Tuesday 08 March 2016 10:17 PM, James Hogan wrote:
> The ld-version.sh script fails on some versions of awk with the
> following error, resulting in build failures for MIPS:
>
> awk: scripts/ld-version.sh: line 4: regular expression compile failed (missing '(')
>
> This is due to the regular expression ".*)", meant to strip off the
> beginning of the ld version string up to the close bracket, however
> brackets have a meaning in regular expressions, so lets escape it so
> that awk doesn't expect a corresponding open bracket.
>
> Fixes: ccbef1674a15 ("Kbuild, lto: add ld-version and ld-ifversion ...")
> Reported-by: Geert Uytterhoeven <geert@...ux-m68k.org>
> Signed-off-by: James Hogan <james.hogan@...tec.com>

This error was only coming in my gitlab builds but was not showing in 
the build of travis-ci. Maybe it depends on the version of awk also.
Build log at: https://gitlab.com/sudipm/linux-next/builds/839573

Tested-by: Sudip Mukherjee <sudip.mukherjee@...ethink.co.uk>

regards
sudip