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authorMasahiro Yamada <masahiroy@kernel.org>2024-04-27 23:55:01 +0900
committerMasahiro Yamada <masahiroy@kernel.org>2024-05-10 04:33:45 +0900
commit9a0ebe5011f49e932bb0a2cea2034fd65e6e567e (patch)
treec7c8b711a61233a0d918adb4a1182ecb8c501171 /scripts/Makefile.host
parent9dcb47a616d552306a01c2032b81c0c920b06847 (diff)
kbuild: use $(obj)/ instead of $(src)/ for common pattern rules
Kbuild conventionally uses $(obj)/ for generated files, and $(src)/ for checked-in source files. It is merely a convention without any functional difference. In fact, $(obj) and $(src) are exactly the same, as defined in scripts/Makefile.build: src := $(obj) Before changing the semantics of $(src) in the next commit, this commit replaces $(obj)/ with $(src)/ in pattern rules where the prerequisite might be a generated file. C, assembly, Rust, and DTS files are sometimes generated by tools, so they could be either generated files or real sources. The $(obj)/ prefix works for both cases with the help of VPATH. As mentioned above, $(obj) and $(src) are the same at this point, hence this commit has no functional change. I did not modify scripts/Makefile.userprogs because there is no use case where userspace C files are generated. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> Reviewed-by: Nicolas Schier <nicolas@fjasle.eu>
Diffstat (limited to 'scripts/Makefile.host')
-rw-r--r--scripts/Makefile.host4
1 files changed, 2 insertions, 2 deletions
diff --git a/scripts/Makefile.host b/scripts/Makefile.host
index 3c17e6ba421c..d35f55e0d141 100644
--- a/scripts/Makefile.host
+++ b/scripts/Makefile.host
@@ -112,7 +112,7 @@ endif
quiet_cmd_host-csingle = HOSTCC $@
cmd_host-csingle = $(HOSTCC) $(hostc_flags) $(KBUILD_HOSTLDFLAGS) -o $@ $< \
$(KBUILD_HOSTLDLIBS) $(HOSTLDLIBS_$(target-stem))
-$(host-csingle): $(obj)/%: $(src)/%.c FORCE
+$(host-csingle): $(obj)/%: $(obj)/%.c FORCE
$(call if_changed_dep,host-csingle)
# Link an executable based on list of .o files, all plain c
@@ -129,7 +129,7 @@ $(call multi_depend, $(host-cmulti), , -objs)
# host-cobjs -> .o
quiet_cmd_host-cobjs = HOSTCC $@
cmd_host-cobjs = $(HOSTCC) $(hostc_flags) -c -o $@ $<
-$(host-cobjs): $(obj)/%.o: $(src)/%.c FORCE
+$(host-cobjs): $(obj)/%.o: $(obj)/%.c FORCE
$(call if_changed_dep,host-cobjs)
# Link an executable based on list of .o files, a mixture of .c and .cc