diff --git a/buffet/libbuffet/preinstall.sh b/buffet/libbuffet/preinstall.sh
new file mode 100755
index 0000000..960d81e
--- /dev/null
+++ b/buffet/libbuffet/preinstall.sh
@@ -0,0 +1,15 @@
+#!/bin/bash
+# Copyright 2014 The Chromium OS Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+set -e
+
+OUT=$1
+v=$2
+
+deps=$(<"${OUT}"/gen/libbuffet-${v}-deps.txt)
+sed \
+  -e "s/@BSLOT@/${v}/g" \
+  -e "s/@PRIVATE_PC@/${deps}/g" \
+  "libbuffet/libbuffet.pc.in" > "${OUT}/lib/libbuffet-${v}.pc"