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authorElliot Berman <eberman@codeaurora.org>2021-01-22 11:27:17 -0800
committerMasahiro Yamada <masahiroy@kernel.org>2021-02-16 12:01:45 +0900
commit1c3fae740aabaeb4d6b4174fc189592eba1b77d0 (patch)
tree6993a6536caf0a709d06b03d2dfcdd2920ee3ae9 /scripts/Makefile.lib
parent2047ace96679a146c8573520a080f9dfa06a2c98 (diff)
downloadlwn-1c3fae740aabaeb4d6b4174fc189592eba1b77d0.tar.gz
lwn-1c3fae740aabaeb4d6b4174fc189592eba1b77d0.zip
Kbuild: Make composite object searching more generic
Reduce repeated logic around expanding composite objects. Signed-off-by: Elliot Berman <eberman@codeaurora.org> Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Diffstat (limited to 'scripts/Makefile.lib')
-rw-r--r--scripts/Makefile.lib12
1 files changed, 8 insertions, 4 deletions
diff --git a/scripts/Makefile.lib b/scripts/Makefile.lib
index e10b675165cd..6f248ff91982 100644
--- a/scripts/Makefile.lib
+++ b/scripts/Makefile.lib
@@ -56,15 +56,19 @@ else
obj-y := $(filter-out %/, $(obj-y))
endif
+# Expand $(foo-objs) $(foo-y) by calling $(call suffix-search,foo.o,-objs -y)
+suffix-search = $(foreach s,$(2),$($(1:.o=$s)))
# If $(foo-objs), $(foo-y), $(foo-m), or $(foo-) exists, foo.o is a composite object
-multi-used-y := $(sort $(foreach m,$(obj-y), $(if $(strip $($(m:.o=-objs)) $($(m:.o=-y)) $($(m:.o=-))), $(m))))
-multi-used-m := $(sort $(foreach m,$(obj-m), $(if $(strip $($(m:.o=-objs)) $($(m:.o=-y)) $($(m:.o=-m)) $($(m:.o=-))), $(m))))
+multi-search = $(sort $(foreach m,$(1), $(if $(strip $(call suffix-search,$(m),$(2) -)), $(m))))
+multi-used-y := $(call multi-search,$(obj-y),-objs -y)
+multi-used-m := $(call multi-search,$(obj-m),-objs -y -m)
multi-used := $(multi-used-y) $(multi-used-m)
# Replace multi-part objects by their individual parts,
# including built-in.a from subdirectories
-real-obj-y := $(foreach m, $(obj-y), $(if $(strip $($(m:.o=-objs)) $($(m:.o=-y)) $($(m:.o=-))),$($(m:.o=-objs)) $($(m:.o=-y)),$(m)))
-real-obj-m := $(foreach m, $(obj-m), $(if $(strip $($(m:.o=-objs)) $($(m:.o=-y)) $($(m:.o=-m)) $($(m:.o=-))),$($(m:.o=-objs)) $($(m:.o=-y)) $($(m:.o=-m)),$(m)))
+real-search = $(foreach m,$(1), $(if $(strip $(call suffix-search,$(m),$(2) -)),$(call suffix-search,$(m),$(2)),$(m)))
+real-obj-y := $(call real-search, $(obj-y),-objs -y)
+real-obj-m := $(call real-search, $(obj-m),-objs -y -m)
always-y += $(always-m)