linux-kernel - Re: [PATCH 1/2] selftests: x86: allow expansion of $(CC)

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Message-ID: <a34f2fc8-f4aa-fef4-d1dd-f3fdb5114f72@linuxfoundation.org>
Date:   Thu, 10 Feb 2022 13:51:51 -0700
From:   Shuah Khan <skhan@...uxfoundation.org>
To:     Muhammad Usama Anjum <usama.anjum@...labora.com>,
        Jarkko Sakkinen <jarkko@...nel.org>,
        Dave Hansen <dave.hansen@...ux.intel.com>,
        Shuah Khan <shuah@...nel.org>,
        Andy Lutomirski <luto@...nel.org>,
        Borislav Petkov <bp@...e.de>,
        Jethro Beekman <jethro@...tanix.com>,
        "open list:INTEL SGX" <linux-sgx@...r.kernel.org>,
        "open list:KERNEL SELFTEST FRAMEWORK" 
        <linux-kselftest@...r.kernel.org>,
        open list <linux-kernel@...r.kernel.org>,
        Shuah Khan <skhan@...uxfoundation.org>
Cc:     kernel@...labora.com, kernelci@...ups.io,
        "kernelci.org bot" <bot@...nelci.org>
Subject: Re: [PATCH 1/2] selftests: x86: allow expansion of $(CC)

On 2/10/22 12:06 PM, Muhammad Usama Anjum wrote:
> CC can have multiple sub-strings like "ccache gcc". Erorr pops up if
> it is treated as single string and double quote are used around it.
> This can be fixed by removing the quotes and not treating CC a single
> string.
> 
> Fixes: e9886ace222e ("selftests, x86: Rework x86 target architecture detection")
> Reported-by: "kernelci.org bot" <bot@...nelci.org>
> Signed-off-by: Muhammad Usama Anjum <usama.anjum@...labora.com>
> ---
>   tools/testing/selftests/x86/check_cc.sh | 2 +-
>   1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/tools/testing/selftests/x86/check_cc.sh b/tools/testing/selftests/x86/check_cc.sh
> index 3e2089c8cf549..aff2c15018b53 100755
> --- a/tools/testing/selftests/x86/check_cc.sh
> +++ b/tools/testing/selftests/x86/check_cc.sh
> @@ -7,7 +7,7 @@ CC="$1"
>   TESTPROG="$2"
>   shift 2
>   
> -if "$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
> 

The intent is testing if $CC is set. Does this change work when
$CC is not set?

thanks,
-- Shuah