On 03/03/17 11:51, Alexey Kardashevskiy wrote:
> With just CONFIG_DEBUG_INFO=y, the makefile adds "-g" to
> KBUILD_CFLAGS/KBUILD_AFLAGS and the test passes.
>
> However, if CONFIG_DEBUG_INFO_SPLIT is also enabled, the makefile
> adds "-gsplit-dwarf" instead which makes the test fail with $?==1
> because of objcopy trying to split the debug info:
>
> objcopy: Warning: '/dev/null' is not an ordinary file
>
> This changes the output to $(mktemp) which fixes the problem.
>
> I am pretty sure there better ways, this is just to demonstrate the bug.
>
> gcc 5.4.1, ppc64le (does not really matter).
>
> Cc: Jason Baron <jba...@redhat.com>
Ping?
> Signed-off-by: Alexey Kardashevskiy <a...@ozlabs.ru>
> ---
> scripts/gcc-goto.sh | 5 ++++-
> 1 file changed, 4 insertions(+), 1 deletion(-)
>
> diff --git a/scripts/gcc-goto.sh b/scripts/gcc-goto.sh
> index c9469d34ecc6..ab21216ab68d 100755
> --- a/scripts/gcc-goto.sh
> +++ b/scripts/gcc-goto.sh
> @@ -2,7 +2,8 @@
> # Test for gcc 'asm goto' support
> # Copyright (C) 2010, Jason Baron <jba...@redhat.com>
>
> -cat << "END" | $@ -x c - -c -o /dev/null >/dev/null 2>&1 && echo "y"
> +TMPOUT=$(mktemp)
> +cat << "END" | $@ -x c - -c -o $TMPOUT >/dev/null 2>&1 && echo "y"
> int main(void)
> {
> #if defined(__arm__) || defined(__aarch64__)
> @@ -19,3 +20,5 @@ entry:
> return 0;
> }
> END
> +
> +rm $TMPOUT 2>/dev/null 2>&1
>
--
Alexey
