x86/boot: Use CROSS_COMPILE prefix for readelf

The boot code Makefile contains a straight 'readelf' invocation. This
causes build warnings in cross compile environments, when there is no
unprefixed readelf accessible via $PATH.

Add the missing $(CROSS_COMPILE) prefix.

[ tglx: Rewrote changelog ]

Fixes: 98f78525371b ("x86/boot: Refuse to build with data relocations")
Signed-off-by: Rob Landley <[email protected]>
Acked-by: Kees Cook <[email protected]>
Cc: Jiri Kosina <[email protected]>
Cc: Paul Bolle <[email protected]>
Cc: "H.J. Lu" <[email protected]>
Cc: [email protected]
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Thomas Gleixner <[email protected]>

diff --git a/arch/x86/boot/compressed/Makefile b/arch/x86/boot/compressed/Makefile
index 44163e8c3868ec4dda58fed54f38411134224089..2c860ad4fe0686a9cf796cd9a5b4453b8199223f 100644 (file)
--- a/arch/x86/boot/compressed/Makefile
+++ b/arch/x86/boot/compressed/Makefile
@@ -94,7 +94,7 @@ vmlinux-objs-$(CONFIG_EFI_MIXED) += $(obj)/efi_thunk_$(BITS).o
 quiet_cmd_check_data_rel = DATAREL $@
 define cmd_check_data_rel
        for obj in $(filter %.o,$^); do \
-               readelf -S $$obj | grep -qF .rel.local && { \
+               ${CROSS_COMPILE}readelf -S $$obj | grep -qF .rel.local && { \
                        echo "error: $$obj has data relocations!" >&2; \
                        exit 1; \
                } || true; \