linux-kernel - Re: [PATCH] scripts/faddr2line: extend usage on generic arch

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Date:   Wed, 6 Dec 2017 09:35:47 +0800
From:   "Liu, Changcheng" <changcheng.liu@...el.com>
To:     Richard Weinberger <richard.weinberger@...il.com>
Cc:     neilb@...e.com, tglx@...utronix.de, gregkh@...uxfoundation.org,
        akpm@...ux-foundation.org, kstewart@...uxfoundation.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] scripts/faddr2line: extend usage on generic arch

On 22:30 Tue 05 Dec, Richard Weinberger wrote:
> On Tue, Nov 21, 2017 at 10:29 AM, Liu, Changcheng
> <changcheng.liu@...el.com> wrote:
> > fadd2line script should use the binary tool
> > used for the target system.
> >
> > Signed-off-by: Liu Changcheng <changcheng.liu@...el.com>
> >
> > diff --git a/scripts/faddr2line b/scripts/faddr2line
> > index 1f5ce95..39e07d8 100755
> > --- a/scripts/faddr2line
> > +++ b/scripts/faddr2line
> > @@ -44,9 +44,16 @@
> >  set -o errexit
> >  set -o nounset
> >
> > +READELF="${CROSS_COMPILE}readelf"
> > +ADDR2LINE="${CROSS_COMPILE}addr2line"
> > +SIZE="${CROSS_COMPILE}size"
> > +NM="${CROSS_COMPILE}nm"
> 
> How is this supposed to work when not cross compiling?
> When CROSS_COMPILE is not set this script will terminate because of
> the "set -o nounset" bash setting...

[Changcheng]:@Richard. Thx for your check. I've sent the fix patch to
resolve the unbound variable error.

> 
> -- 
> Thanks,
> //richard