On Tue, Apr 05, 2022 at 08:33:55PM +0900 Masahiro Yamada wrote:
> The first line of *.mod lists the member objects of the module.
> This list may contain duplication if the same object is added multiple
> times, like this:
>
> obj-m := foo.o
> foo-$(CONFIG_FOO1_X) += foo1.o
> foo-$(CONFIG_FOO1_Y) += foo1.o
> foo-$(CONFIG_FOO2_X) += foo2.o
> foo-$(CONFIG_FOO2_Y) += foo2.o
>
> This is probably not a big deal. As far as I know, the only small
> problem is scripts/mod/sumversion.c parses the same file over again.
> This can be avoided by adding $(sort ...). It has a side-effect that
> sorts the objects alphabetically, but it is not a big deal, either.
>
> Signed-off-by: Masahiro Yamada <masahiroy@xxxxxxxxxx>
> ---
>
> Changes in v2:
> - new
>
> scripts/Makefile.build | 4 +++-
> 1 file changed, 3 insertions(+), 1 deletion(-)
>
> diff --git a/scripts/Makefile.build b/scripts/Makefile.build
> index 3ef2373f0a57..63625877aeae 100644
> --- a/scripts/Makefile.build
> +++ b/scripts/Makefile.build
> @@ -307,8 +307,10 @@ $(obj)/%.prelink.o: $(obj)/%.o FORCE
> $(call if_changed,cc_prelink_modules)
> endif
>
> +multi-m-prereqs = $(sort $(addprefix $(obj)/, $($*-objs) $($*-y) $($*-m)))
> +
> cmd_mod = { \
> - echo $(if $($*-objs)$($*-y)$($*-m), $(addprefix $(obj)/, $($*-objs) $($*-y) $($*-m)), $(@:.mod=.o)); \
> + echo $(if $(multi-m-prereqs), $(multi-m-prereqs), $(@:.mod=.o)); \
I'd rather expected to see $(or) here, too, as in commit 5c8166419acf ("kbuild:
replace $(if A,A,B) with $(or A,B)").
Reviewed-by: Nicolas Schier <nicolas@xxxxxxxxx>
> $(undefined_syms) echo; \
> } > $@
>
> --
> 2.32.0
>
>
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