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)); \
$(undefined_syms) echo; \
} > $@
--
2.32.0
