diff options
| author | Masahiro Yamada | 2019-01-17 19:02:43 +0900 |
|---|---|---|
| committer | Masahiro Yamada | 2019-01-28 09:11:17 +0900 |
| commit | afa974b771281fd89e8fdcb71152152f17fb8303 (patch) | |
| tree | b6a3de04148c2207d3cd094b70820160e24d0420 /arch/x86/realmode/rm/Makefile | |
| parent | 5d680056cb6de18f0221e321ee51d60ccd700781 (diff) | |
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/x86/realmode/rm/Makefile')
| -rw-r--r-- | arch/x86/realmode/rm/Makefile | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/arch/x86/realmode/rm/Makefile b/arch/x86/realmode/rm/Makefile index 4463fa72db94..394377c9f7f8 100644 --- a/arch/x86/realmode/rm/Makefile +++ b/arch/x86/realmode/rm/Makefile @@ -37,8 +37,7 @@ REALMODE_OBJS = $(addprefix $(obj)/,$(realmode-y)) sed-pasyms := -n -r -e 's/^([0-9a-fA-F]+) [ABCDGRSTVW] (.+)$$/pa_\2 = \2;/p' quiet_cmd_pasyms = PASYMS $@ - cmd_pasyms = $(NM) $(filter-out FORCE,$^) | \ - sed $(sed-pasyms) | sort | uniq > $@ + cmd_pasyms = $(NM) $(real-prereqs) | sed $(sed-pasyms) | sort | uniq > $@ targets += pasyms.h $(obj)/pasyms.h: $(REALMODE_OBJS) FORCE |