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x86/boot: kbuild: allow readelf executable to be specified
Introduce a new READELF variable to top-level Makefile, so the name of readelf binary can be specified. Before this change the name of the binary was hardcoded to "$(CROSS_COMPILE)readelf" which might not be present for every toolchain. This allows to build with LLVM Object Reader by using make parameter READELF=llvm-readelf. Link: https://github.com/ClangBuiltLinux/linux/issues/771 Signed-off-by: Dmitry Golovin <dima@golovin.in> Reviewed-by: Nick Desaulniers <ndesaulniers@google.com> Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
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3
Makefile
3
Makefile
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@ -414,6 +414,7 @@ STRIP = $(CROSS_COMPILE)strip
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OBJCOPY = $(CROSS_COMPILE)objcopy
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OBJCOPY = $(CROSS_COMPILE)objcopy
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OBJDUMP = $(CROSS_COMPILE)objdump
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OBJDUMP = $(CROSS_COMPILE)objdump
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OBJSIZE = $(CROSS_COMPILE)size
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OBJSIZE = $(CROSS_COMPILE)size
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READELF = $(CROSS_COMPILE)readelf
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PAHOLE = pahole
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PAHOLE = pahole
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LEX = flex
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LEX = flex
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YACC = bison
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YACC = bison
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@ -472,7 +473,7 @@ GCC_PLUGINS_CFLAGS :=
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CLANG_FLAGS :=
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CLANG_FLAGS :=
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export ARCH SRCARCH CONFIG_SHELL BASH HOSTCC KBUILD_HOSTCFLAGS CROSS_COMPILE AS LD CC
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export ARCH SRCARCH CONFIG_SHELL BASH HOSTCC KBUILD_HOSTCFLAGS CROSS_COMPILE AS LD CC
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export CPP AR NM STRIP OBJCOPY OBJDUMP OBJSIZE PAHOLE LEX YACC AWK INSTALLKERNEL
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export CPP AR NM STRIP OBJCOPY OBJDUMP OBJSIZE READELF PAHOLE LEX YACC AWK INSTALLKERNEL
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export PERL PYTHON PYTHON2 PYTHON3 CHECK CHECKFLAGS MAKE UTS_MACHINE HOSTCXX
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export PERL PYTHON PYTHON2 PYTHON3 CHECK CHECKFLAGS MAKE UTS_MACHINE HOSTCXX
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export KBUILD_HOSTCXXFLAGS KBUILD_HOSTLDFLAGS KBUILD_HOSTLDLIBS LDFLAGS_MODULE
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export KBUILD_HOSTCXXFLAGS KBUILD_HOSTLDFLAGS KBUILD_HOSTLDLIBS LDFLAGS_MODULE
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@ -103,7 +103,7 @@ vmlinux-objs-$(CONFIG_EFI_MIXED) += $(obj)/efi_thunk_$(BITS).o
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quiet_cmd_check_data_rel = DATAREL $@
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quiet_cmd_check_data_rel = DATAREL $@
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define cmd_check_data_rel
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define cmd_check_data_rel
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for obj in $(filter %.o,$^); do \
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for obj in $(filter %.o,$^); do \
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${CROSS_COMPILE}readelf -S $$obj | grep -qF .rel.local && { \
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$(READELF) -S $$obj | grep -qF .rel.local && { \
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echo "error: $$obj has data relocations!" >&2; \
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echo "error: $$obj has data relocations!" >&2; \
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exit 1; \
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exit 1; \
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} || true; \
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} || true; \
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