From: Dmitry Golovin <d...@golovin.in> commit eefb8c124fd969e9a174ff2bedff86aa305a7438 upstream.
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 <d...@golovin.in> Reviewed-by: Nick Desaulniers <ndesaulni...@google.com> Signed-off-by: Masahiro Yamada <masahi...@kernel.org> Signed-off-by: Nick Desaulniers <ndesaulni...@google.com> [nd: conflict in exported vars list from not backporting commit e83b9f55448a ("kbuild: add ability to generate BTF type info for vmlinux")] Signed-off-by: Greg Kroah-Hartman <gre...@linuxfoundation.org> --- Makefile | 3 ++- arch/x86/boot/compressed/Makefile | 2 +- 2 files changed, 3 insertions(+), 2 deletions(-) --- a/Makefile +++ b/Makefile @@ -378,6 +378,7 @@ STRIP = $(CROSS_COMPILE)strip OBJCOPY = $(CROSS_COMPILE)objcopy OBJDUMP = $(CROSS_COMPILE)objdump OBJSIZE = $(CROSS_COMPILE)size +READELF = $(CROSS_COMPILE)readelf LEX = flex YACC = bison AWK = awk @@ -434,7 +435,7 @@ GCC_PLUGINS_CFLAGS := CLANG_FLAGS := export ARCH SRCARCH CONFIG_SHELL HOSTCC KBUILD_HOSTCFLAGS CROSS_COMPILE AS LD CC -export CPP AR NM STRIP OBJCOPY OBJDUMP OBJSIZE KBUILD_HOSTLDFLAGS KBUILD_HOSTLDLIBS +export CPP AR NM STRIP OBJCOPY OBJDUMP OBJSIZE READELF KBUILD_HOSTLDFLAGS KBUILD_HOSTLDLIBS export MAKE LEX YACC AWK GENKSYMS INSTALLKERNEL PERL PYTHON PYTHON2 PYTHON3 UTS_MACHINE export HOSTCXX KBUILD_HOSTCXXFLAGS LDFLAGS_MODULE CHECK CHECKFLAGS --- a/arch/x86/boot/compressed/Makefile +++ b/arch/x86/boot/compressed/Makefile @@ -102,7 +102,7 @@ vmlinux-objs-$(CONFIG_EFI_MIXED) += $(ob quiet_cmd_check_data_rel = DATAREL $@ define cmd_check_data_rel for obj in $(filter %.o,$^); do \ - ${CROSS_COMPILE}readelf -S $$obj | grep -qF .rel.local && { \ + $(READELF) -S $$obj | grep -qF .rel.local && { \ echo "error: $$obj has data relocations!" >&2; \ exit 1; \ } || true; \
