Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
kbuild: remove support for single %.symtypes build rule
This rule is unnecessary because you can generate foo/bar.symtypes
as a side effect using:
$ make KBUILD_SYMTYPES=1 foo/bar.o
While compiling *.o is slower than preprocessing, the impact is
negligible. I prioritize keeping the code simpler.
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Reviewed-by: Nicolas Schier <nicolas@fjasle.eu>
+5
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+1
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Makefile
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Makefile
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outputmakefile rustavailable rustfmt rustfmtcheck
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no-sync-config-targets := $(no-dot-config-targets) %install modules_sign kernelrelease \
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image_name
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-
single-targets := %.a %.i %.ko %.lds %.ll %.lst %.mod %.o %.rsi %.s %.symtypes %/
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single-targets := %.a %.i %.ko %.lds %.ll %.lst %.mod %.o %.rsi %.s %/
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config-build :=
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mixed-build :=
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scripts/Makefile.build
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scripts/Makefile.build
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$(call if_changed_dep,cpp_i_c)
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genksyms = $(objtree)/scripts/genksyms/genksyms \
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$(if $(1), -T $(2)) \
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$(if $(KBUILD_PRESERVE), -p) \
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$(addprefix -r , $(wildcard $(2:.symtypes=.symref)))
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$(if $(KBUILD_SYMTYPES), -T $(@:.o=.symtypes)) \
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$(if $(KBUILD_PRESERVE), -p) \
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$(addprefix -r , $(wildcard $(@:.o=.symref)))
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# These mirror gensymtypes_S and co below, keep them in synch.
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cmd_gensymtypes_c = $(CPP) -D__GENKSYMS__ $(c_flags) $< | $(genksyms)
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-
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quiet_cmd_cc_symtypes_c = SYM $(quiet_modtag) $@
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cmd_cc_symtypes_c = $(call cmd_gensymtypes_c,true,$@) >/dev/null
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-
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$(obj)/%.symtypes : $(obj)/%.c FORCE
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$(call cmd,cc_symtypes_c)
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# LLVM assembly
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# Generate .ll files from .c
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gen_symversions = \
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if $(NM) $@ 2>/dev/null | grep -q ' __export_symbol_'; then \
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$(call cmd_gensymtypes_$(1),$(KBUILD_SYMTYPES),$(@:.o=.symtypes)) \
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>> $(dot-target).cmd; \
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$(cmd_gensymtypes_$1) >> $(dot-target).cmd; \
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fi
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cmd_gen_symversions_c = $(call gen_symversions,c)
···
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echo "\#include <asm/asm-prototypes.h>" ; \
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$(NM) $@ | sed -n 's/.* __export_symbol_\(.*\)/EXPORT_SYMBOL(\1);/p' ; } | \
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$(CPP) -D__GENKSYMS__ $(c_flags) -xc - | $(genksyms)
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-
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quiet_cmd_cc_symtypes_S = SYM $(quiet_modtag) $@
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cmd_cc_symtypes_S = $(call cmd_gensymtypes_S,true,$@) >/dev/null
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-
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$(obj)/%.symtypes : $(obj)/%.S FORCE
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$(call cmd,cc_symtypes_S)
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-
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quiet_cmd_cpp_s_S = CPP $(quiet_modtag) $@
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cmd_cpp_s_S = $(CPP) $(a_flags) -o $@ $<