fix cpio introduce symlinks checking function

Change-Id: Ic9c742b751190aa50de8a3b581d1ca34a4c107b5

diff --git a/init_buildsystem b/init_buildsystem
index 169158d..1b3170f 100755 (executable)
--- a/init_buildsystem
+++ b/init_buildsystem
@@ -208,6 +208,7 @@ preinstall() {
     else
        unsafe_preinstall_check
        CPIO="cpio --extract --unconditional --preserve-modification-time --make-directories --no-absolute-filenames --quiet"
+       cpio --help 2>/dev/null | grep -q -e --extract-over-symlinks && CPIO="$CPIO --extract-over-symlinks"
        TAR="tar -x"
     fi
     pkg_preinstall