[PATCH] builddeb: use $OBJCOPY variable instead of objcopy

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In cross-build environment, we expect to use the cross-compiler objcopy
instead of the host objcopy.

It fixes following build failures:
objcopy --only-keep-debug lib/modules/3.14/kernel/net/ipv6/xfrm6_mode_tunnel.ko /srv/build/linux/debian/dbgtmp/usr/lib/debug/lib/modules/3.14/kernel/net/ipv6/xfrm6_mode_tunnel.ko
objcopy: Unable to recognise the format of the input file `lib/modules/3.14/kernel/net/ipv6/xfrm6_mode_tunnel.ko'

Signed-off-by: Fathi Boudra <fathi.boudra@xxxxxxxxxx>
---
 scripts/package/builddeb | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/scripts/package/builddeb b/scripts/package/builddeb
index f46e4dd..152d4d2 100644
--- a/scripts/package/builddeb
+++ b/scripts/package/builddeb
@@ -155,11 +155,11 @@ if grep -q '^CONFIG_MODULES=y' $KCONFIG_CONFIG ; then
 			for module in $(find lib/modules/ -name *.ko); do
 				mkdir -p $(dirname $dbg_dir/usr/lib/debug/$module)
 				# only keep debug symbols in the debug file
-				objcopy --only-keep-debug $module $dbg_dir/usr/lib/debug/$module
+				$OBJCOPY --only-keep-debug $module $dbg_dir/usr/lib/debug/$module
 				# strip original module from debug symbols
-				objcopy --strip-debug $module
+				$OBJCOPY --strip-debug $module
 				# then add a link to those
-				objcopy --add-gnu-debuglink=$dbg_dir/usr/lib/debug/$module $module
+				$OBJCOPY --add-gnu-debuglink=$dbg_dir/usr/lib/debug/$module $module
 			done
 		)
 	fi
-- 
1.9.1

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