Re: [RFC 1/2] Kbuild: Make composite object searching more generic
From: Masahiro Yamada <masahiroy@kernel.org>
Date: 2021-01-26 18:20:41
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On Sat, Jan 23, 2021 at 4:27 AM Elliot Berman [off-list ref] wrote:
Reduce repeated logic around expanding composite objects in preparation for later commit to support nested composite objects. Signed-off-by: Elliot Berman <redacted>
This patch is a nice clean-up regardless of your main motivation in 2/2. I removed the "in preparation ..." part. Applied to linux-kbuild. Thanks.
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--- scripts/Makefile.lib | 12 ++++++++---- 1 file changed, 8 insertions(+), 4 deletions(-)diff --git a/scripts/Makefile.lib b/scripts/Makefile.lib index 213677a5..93e4f10 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) --The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum, a Linux Foundation Collaborative Project
-- Best Regards Masahiro Yamada