objtool: Query pkg-config for libelf location

endif

export mod_sign_cmd

HOST_LIBELF_LIBS = $(shell pkg-config libelf --libs 2>/dev/null || echo -lelf)

ifdef CONFIG_STACK_VALIDATION

  has_libelf := $(call try-run,\

		echo "int main() {}" | $(HOSTCC) -xc -o /dev/null -lelf -,1,0)

		echo "int main() {}" | $(HOSTCC) -xc -o /dev/null $(HOST_LIBELF_LIBS) -,1,0)

  ifeq ($(has_libelf),1)

    objtool_target := tools/objtool FORCE

  else

OBJTOOL    := $(OUTPUT)objtool

OBJTOOL_IN := $(OBJTOOL)-in.o

LIBELF_FLAGS := $(shell pkg-config libelf --cflags 2>/dev/null)

LIBELF_LIBS  := $(shell pkg-config libelf --libs 2>/dev/null || echo -lelf)

all: $(OBJTOOL)

INCLUDES := -I$(srctree)/tools/include \

	    -I$(srctree)/tools/arch/$(HOSTARCH)/include/uapi \

	    -I$(srctree)/tools/objtool/arch/$(ARCH)/include

WARNINGS := $(EXTRA_WARNINGS) -Wno-switch-default -Wno-switch-enum -Wno-packed

CFLAGS   += -Werror $(WARNINGS) $(KBUILD_HOSTCFLAGS) -g $(INCLUDES)

LDFLAGS  += -lelf $(LIBSUBCMD) $(KBUILD_HOSTLDFLAGS)

CFLAGS   += -Werror $(WARNINGS) $(KBUILD_HOSTCFLAGS) -g $(INCLUDES) $(LIBELF_FLAGS)

LDFLAGS  += $(LIBELF_LIBS) $(LIBSUBCMD) $(KBUILD_HOSTLDFLAGS)

# Allow old libelf to be used:

elfshdr := $(shell echo '$(pound)include <libelf.h>' | $(CC) $(CFLAGS) -x c -E - | grep elf_getshdr)