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| author | Masahiro Yamada <yamada.masahiro@socionext.com> | 2019-01-17 13:02:43 +0300 |
|---|---|---|
| committer | Masahiro Yamada <yamada.masahiro@socionext.com> | 2019-01-28 03:11:17 +0300 |
| commit | afa974b771281fd89e8fdcb71152152f17fb8303 (patch) | |
| tree | b6a3de04148c2207d3cd094b70820160e24d0420 /arch/s390/boot | |
| parent | 5d680056cb6de18f0221e321ee51d60ccd700781 (diff) | |
| download | linux-afa974b771281fd89e8fdcb71152152f17fb8303.tar.xz | |
kbuild: add real-prereqs shorthand for $(filter-out FORCE,$^)
In Kbuild, if_changed and friends must have FORCE as a prerequisite.
Hence, $(filter-out FORCE,$^) or $(filter-out $(PHONY),$^) is a common
idiom to get the names of all the prerequisites except phony targets.
Add real-prereqs as a shorthand.
Note:
We cannot replace $(filter %.o,$^) in cmd_link_multi-m because $^ may
include auto-generated dependencies from the .*.cmd file when a single
object module is changed into a multi object module. Refer to commit
69ea912fda74 ("kbuild: remove unneeded link_multi_deps"). I added some
comment to avoid accidental breakage.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Acked-by: Rob Herring <robh@kernel.org>
Diffstat (limited to 'arch/s390/boot')
| -rw-r--r-- | arch/s390/boot/Makefile | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/s390/boot/Makefile b/arch/s390/boot/Makefile index b4d8a426ec74..11ca8795b74a 100644 --- a/arch/s390/boot/Makefile +++ b/arch/s390/boot/Makefile @@ -58,7 +58,7 @@ $(obj)/compressed/vmlinux: $(obj)/startup.a FORCE $(Q)$(MAKE) $(build)=$(obj)/compressed $@ quiet_cmd_ar = AR $@ - cmd_ar = rm -f $@; $(AR) rcsTP$(KBUILD_ARFLAGS) $@ $(filter $(OBJECTS), $^) + cmd_ar = rm -f $@; $(AR) rcsTP$(KBUILD_ARFLAGS) $@ $(real-prereqs) $(obj)/startup.a: $(OBJECTS) FORCE $(call if_changed,ar) |