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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 | |
| 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')
| -rw-r--r-- | arch/mips/boot/Makefile | 2 | ||||
| -rw-r--r-- | arch/powerpc/boot/Makefile | 2 | ||||
| -rw-r--r-- | arch/s390/boot/Makefile | 2 | ||||
| -rw-r--r-- | arch/x86/realmode/rm/Makefile | 3 |
4 files changed, 4 insertions, 5 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) diff --git a/arch/powerpc/boot/Makefile b/arch/powerpc/boot/Makefile index 0e8dadd011bc..73d1f3562978 100644 --- a/arch/powerpc/boot/Makefile +++ b/arch/powerpc/boot/Makefile @@ -218,7 +218,7 @@ quiet_cmd_bootas = BOOTAS $@ cmd_bootas = $(BOOTCC) -Wp,-MD,$(depfile) $(BOOTAFLAGS) -c -o $@ $< quiet_cmd_bootar = BOOTAR $@ - cmd_bootar = $(BOOTAR) $(BOOTARFLAGS) $@.$$$$ $(filter-out FORCE,$^); mv $@.$$$$ $@ + cmd_bootar = $(BOOTAR) $(BOOTARFLAGS) $@.$$$$ $(real-prereqs); mv $@.$$$$ $@ $(obj-libfdt): $(obj)/%.o: $(srctree)/scripts/dtc/libfdt/%.c FORCE $(call if_changed_dep,bootcc) diff --git a/arch/s390/boot/Makefile b/arch/s390/boot/Makefile index b4d8a426ec74..11ca8795b74a 100644 --- a/arch/s390/boot/Makefile +++ b/arch/s390/boot/Makefile @@ -58,7 +58,7 @@ $(obj)/compressed/vmlinux: $(obj)/startup.a FORCE $(Q)$(MAKE) $(build)=$(obj)/compressed $@ quiet_cmd_ar = AR $@ - cmd_ar = rm -f $@; $(AR) rcsTP$(KBUILD_ARFLAGS) $@ $(filter $(OBJECTS), $^) + cmd_ar = rm -f $@; $(AR) rcsTP$(KBUILD_ARFLAGS) $@ $(real-prereqs) $(obj)/startup.a: $(OBJECTS) FORCE $(call if_changed,ar) diff --git a/arch/x86/realmode/rm/Makefile b/arch/x86/realmode/rm/Makefile index 4463fa72db94..394377c9f7f8 100644 --- a/arch/x86/realmode/rm/Makefile +++ b/arch/x86/realmode/rm/Makefile @@ -37,8 +37,7 @@ REALMODE_OBJS = $(addprefix $(obj)/,$(realmode-y)) sed-pasyms := -n -r -e 's/^([0-9a-fA-F]+) [ABCDGRSTVW] (.+)$$/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 |