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-rw-r--r--Makefile4
-rw-r--r--tools/objtool/Makefile7
2 files changed, 8 insertions, 3 deletions
diff --git a/Makefile b/Makefile
index c0a34064c574..eef3d3f87c3b 100644
--- a/Makefile
+++ b/Makefile
@@ -950,9 +950,11 @@ mod_sign_cmd = true
950endif 950endif
951export mod_sign_cmd 951export mod_sign_cmd
952 952
953HOST_LIBELF_LIBS = $(shell pkg-config libelf --libs 2>/dev/null || echo -lelf)
954
953ifdef CONFIG_STACK_VALIDATION 955ifdef CONFIG_STACK_VALIDATION
954 has_libelf := $(call try-run,\ 956 has_libelf := $(call try-run,\
955 echo "int main() {}" | $(HOSTCC) -xc -o /dev/null -lelf -,1,0) 957 echo "int main() {}" | $(HOSTCC) -xc -o /dev/null $(HOST_LIBELF_LIBS) -,1,0)
956 ifeq ($(has_libelf),1) 958 ifeq ($(has_libelf),1)
957 objtool_target := tools/objtool FORCE 959 objtool_target := tools/objtool FORCE
958 else 960 else
diff --git a/tools/objtool/Makefile b/tools/objtool/Makefile
index c9d038f91af6..53f8be0f4a1f 100644
--- a/tools/objtool/Makefile
+++ b/tools/objtool/Makefile
@@ -25,14 +25,17 @@ LIBSUBCMD = $(LIBSUBCMD_OUTPUT)libsubcmd.a
25OBJTOOL := $(OUTPUT)objtool 25OBJTOOL := $(OUTPUT)objtool
26OBJTOOL_IN := $(OBJTOOL)-in.o 26OBJTOOL_IN := $(OBJTOOL)-in.o
27 27
28LIBELF_FLAGS := $(shell pkg-config libelf --cflags 2>/dev/null)
29LIBELF_LIBS := $(shell pkg-config libelf --libs 2>/dev/null || echo -lelf)
30
28all: $(OBJTOOL) 31all: $(OBJTOOL)
29 32
30INCLUDES := -I$(srctree)/tools/include \ 33INCLUDES := -I$(srctree)/tools/include \
31 -I$(srctree)/tools/arch/$(HOSTARCH)/include/uapi \ 34 -I$(srctree)/tools/arch/$(HOSTARCH)/include/uapi \
32 -I$(srctree)/tools/objtool/arch/$(ARCH)/include 35 -I$(srctree)/tools/objtool/arch/$(ARCH)/include
33WARNINGS := $(EXTRA_WARNINGS) -Wno-switch-default -Wno-switch-enum -Wno-packed 36WARNINGS := $(EXTRA_WARNINGS) -Wno-switch-default -Wno-switch-enum -Wno-packed
34CFLAGS += -Werror $(WARNINGS) $(KBUILD_HOSTCFLAGS) -g $(INCLUDES) 37CFLAGS += -Werror $(WARNINGS) $(KBUILD_HOSTCFLAGS) -g $(INCLUDES) $(LIBELF_FLAGS)
35LDFLAGS += -lelf $(LIBSUBCMD) $(KBUILD_HOSTLDFLAGS) 38LDFLAGS += $(LIBELF_LIBS) $(LIBSUBCMD) $(KBUILD_HOSTLDFLAGS)
36 39
37# Allow old libelf to be used: 40# Allow old libelf to be used:
38elfshdr := $(shell echo '$(pound)include <libelf.h>' | $(CC) $(CFLAGS) -x c -E - | grep elf_getshdr) 41elfshdr := $(shell echo '$(pound)include <libelf.h>' | $(CC) $(CFLAGS) -x c -E - | grep elf_getshdr)