linux-kernel - RE: [PATCH] selftests, x86: fix how check

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Date:   Fri, 25 Feb 2022 21:38:01 +0000
From:   David Laight <David.Laight@...LAB.COM>
To:     'Guillaume Tucker' <guillaume.tucker@...labora.com>,
        Shuah Khan <shuah@...nel.org>,
        Andrew Morton <akpm@...ux-foundation.org>
CC:     Borislav Petkov <bp@...e.de>,
        Dave Hansen <dave.hansen@...ux.intel.com>,
        "kernel@...labora.com" <kernel@...labora.com>,
        "linux-mm@...ck.org" <linux-mm@...ck.org>,
        "linux-kselftest@...r.kernel.org" <linux-kselftest@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: RE: [PATCH] selftests, x86: fix how check_cc.sh is being invoked

From: Guillaume Tucker
> Sent: 25 February 2022 18:50
...
> > -if "$CC" -o /dev/null "$TESTPROG" -O0 "$@" 2>/dev/null; then
> > +if $CC -o /dev/null "$TESTPROG" -O0 "$@" 2>/dev/null; then
> >      echo 1
> >  else
> >      echo 0
> 
> I see the change in check_cc.sh is already covered by Usama's patch:
> 
>   selftests/x86: Add validity check and allow field splitting
> 
> -if "$CC" -o /dev/null "$TESTPROG" -O0 "$@" 2>/dev/null; then
> +if [ -n "$CC" ] && $CC -o /dev/null "$TESTPROG" -O0 "$@" 2>/dev/null; then

Or:
	if ${CC:-false} -o /dev/null ....
There's always one more way...

	David

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