kbuild: buildtar: fix tar error when CONFIG_MODULES is disabled

$tmpdir/lib is created by "make modules_install".  It does not exist
if CONFIG_MODULES is disabled, then tar reports the following messages:

tar: lib: Cannot stat: No such file or directory
tar: Exiting with failure status due to previous errors

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>

1 files changed, 3 insertions, 2 deletions

diff --git a/scripts/package/buildtar b/scripts/package/buildtar
index 483ba00524d5..60dd836a0214 100755
--- a/scripts/package/buildtar
+++ b/scripts/package/buildtar
@@ -51,13 +51,14 @@ esac
 #
 rm -rf -- "${tmpdir}"
 mkdir -p -- "${tmpdir}/boot"
-
+dirs=boot
 
 #
 # Try to install modules
 #
 if grep -q '^CONFIG_MODULES=y' "${KCONFIG_CONFIG}"; then
         make ARCH="${ARCH}" O="${objtree}" KBUILD_SRC= INSTALL_MOD_PATH="${tmpdir}" modules_install
+        dirs="$dirs lib"
 fi
 
 
@@ -129,7 +130,7 @@ esac
         if tar --owner=root --group=root --help >/dev/null 2>&1; then
                 opts="--owner=root --group=root"
         fi
-        tar cf - -C "$tmpdir" boot/ lib/ $opts | ${compress} > "${tarball}${file_ext}"
+        tar cf - -C "$tmpdir" $dirs $opts | ${compress} > "${tarball}${file_ext}"
 )
 
 echo "Tarball successfully created in ${tarball}${file_ext}"