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| author | Rolf Eike Beer <eb@emlix.com> | 2019-03-26 12:48:39 -0500 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2019-03-28 13:32:01 +0100 |
| commit | 056d28d135bca0b1d0908990338e00e9dadaf057 (patch) | |
| tree | e4c4bb1e57d8b4f898dedcb277441ff2555a0e65 | |
| parent | cfa637cb20e96fe8cf44b867a7d7c34649cbf8eb (diff) | |
| download | linux-0-day-056d28d135bca0b1d0908990338e00e9dadaf057.tar.gz linux-0-day-056d28d135bca0b1d0908990338e00e9dadaf057.tar.xz | |
objtool: Query pkg-config for libelf location
If it is not in the default location, compilation fails at several points.
Signed-off-by: Rolf Eike Beer <eb@emlix.com>
Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: stable@vger.kernel.org
Link: https://lkml.kernel.org/r/91a25e992566a7968fedc89ec80e7f4c83ad0548.1553622500.git.jpoimboe@redhat.com
| -rw-r--r-- | Makefile | 4 | ||||
| -rw-r--r-- | tools/objtool/Makefile | 7 |
2 files changed, 8 insertions, 3 deletions
diff --git a/Makefile b/Makefile index c0a34064c5744..eef3d3f87c3b5 100644 --- a/Makefile +++ b/Makefile @@ -950,9 +950,11 @@ mod_sign_cmd = true 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 diff --git a/tools/objtool/Makefile b/tools/objtool/Makefile index c9d038f91af6b..53f8be0f4a1f7 100644 --- a/tools/objtool/Makefile +++ b/tools/objtool/Makefile @@ -25,14 +25,17 @@ LIBSUBCMD = $(LIBSUBCMD_OUTPUT)libsubcmd.a 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) |