diff --git a/yocto-poky/meta/lib/oe/utils.py b/yocto-poky/meta/lib/oe/utils.py
index cee087f..30d3062 100644
--- a/yocto-poky/meta/lib/oe/utils.py
+++ b/yocto-poky/meta/lib/oe/utils.py
@@ -208,6 +208,28 @@
     import re
     return re.sub("\s+", " ", string).strip()
 
+def format_pkg_list(pkg_dict, ret_format=None):
+    output = []
+
+    if ret_format == "arch":
+        for pkg in sorted(pkg_dict):
+            output.append("%s %s" % (pkg, pkg_dict[pkg]["arch"]))
+    elif ret_format == "file":
+        for pkg in sorted(pkg_dict):
+            output.append("%s %s %s" % (pkg, pkg_dict[pkg]["filename"], pkg_dict[pkg]["arch"]))
+    elif ret_format == "ver":
+        for pkg in sorted(pkg_dict):
+            output.append("%s %s %s" % (pkg, pkg_dict[pkg]["arch"], pkg_dict[pkg]["ver"]))
+    elif ret_format == "deps":
+        for pkg in sorted(pkg_dict):
+            for dep in pkg_dict[pkg]["deps"]:
+                output.append("%s|%s" % (pkg, dep))
+    else:
+        for pkg in sorted(pkg_dict):
+            output.append(pkg)
+
+    return '\n'.join(output)
+
 #
 # Python 2.7 doesn't have threaded pools (just multiprocessing)
 # so implement a version here
@@ -271,3 +293,14 @@
         self.tasks.join()
         for worker in self.workers:
             worker.join()
+
+def write_ld_so_conf(d):
+    # Some utils like prelink may not have the correct target library paths
+    # so write an ld.so.conf to help them
+    ldsoconf = d.expand("${STAGING_DIR_TARGET}${sysconfdir}/ld.so.conf")
+    if os.path.exists(ldsoconf):
+        bb.utils.remove(ldsoconf)
+    bb.utils.mkdirhier(os.path.dirname(ldsoconf))
+    with open(ldsoconf, "w") as f:
+        f.write(d.getVar("base_libdir", True) + '\n')
+        f.write(d.getVar("libdir", True) + '\n')