On 10/10/24 3:59 PM, André Almeida wrote:
> As stated at Documentation/kbuild/llvm.rst, to make usage of ccache one
> must set KBUILD_BUILD_TIMESTAMP=''. Setting this together with W=1
> will trigger the following warning for every compiled file:
>
> date: invalid date ‘+%s’
>
> This comes from kernel-doc script, that produces the following command
> when KBUILD_BUILD_TIMESTAMP is empty:
>
> date -d"" +%s
>
> That triggers the warning above. Add a space between the flag `-d` and
> the string argument to fix date command and remove the warning.
>
> Signed-off-by: André Almeida <andrealmeid@xxxxxxxxxx>
Acked-by: Randy Dunlap <rdunlap@xxxxxxxxxxxxx>
Thanks.
> ---
> scripts/kernel-doc | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/scripts/kernel-doc b/scripts/kernel-doc
> index 2791f8195203..8728f9824c65 100755
> --- a/scripts/kernel-doc
> +++ b/scripts/kernel-doc
> @@ -160,7 +160,7 @@ my @export_file_list;
>
> my @build_time;
> if (defined($ENV{'KBUILD_BUILD_TIMESTAMP'}) &&
> - (my $seconds = `date -d"${ENV{'KBUILD_BUILD_TIMESTAMP'}}" +%s`) ne '') {
> + (my $seconds = `date -d "${ENV{'KBUILD_BUILD_TIMESTAMP'}}" +%s`) ne '') {
> @build_time = gmtime($seconds);
> } else {
> @build_time = localtime;
--
~Randy
