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authorMasahiro Yamada <yamada.masahiro@socionext.com>2019-01-17 19:02:43 +0900
committerMasahiro Yamada <yamada.masahiro@socionext.com>2019-01-28 09:11:17 +0900
commitafa974b771281fd89e8fdcb71152152f17fb8303 (patch)
treeb6a3de04148c2207d3cd094b70820160e24d0420 /arch/mips/boot
parent5d680056cb6de18f0221e321ee51d60ccd700781 (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/mips/boot')
-rw-r--r--arch/mips/boot/Makefile2
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/mips/boot/Makefile b/arch/mips/boot/Makefile
index 35704c28a28b..3ce4dd578370 100644
--- a/arch/mips/boot/Makefile
+++ b/arch/mips/boot/Makefile
@@ -115,7 +115,7 @@ endif
targets += vmlinux.its.S
quiet_cmd_its_cat = CAT $@
- cmd_its_cat = cat $(filter-out $(PHONY), $^) >$@
+ cmd_its_cat = cat $(real-prereqs) >$@
$(obj)/vmlinux.its.S: $(addprefix $(srctree)/arch/mips/$(PLATFORM)/,$(ITS_INPUTS)) FORCE
$(call if_changed,its_cat)