diff --git a/run.in b/run.in
index 1a379ddf37b5534622472c8262bf5aa1d20cd44d..cbef61a674ef79d8c669ca151186c96569641fb4 100644
--- a/run.in
+++ b/run.in
@@ -53,6 +53,13 @@ else
 fi
 export LD_LIBRARY_PATH
 
+if [ -z "$PKG_CONFIG_PATH" ]; then
+    PKG_CONFIG_PATH="$b/src"
+else
+    PKG_CONFIG_PATH="$b/src:$PKG_CONFIG_PATH"
+fi
+export PKG_CONFIG_PATH
+
 export LIBVIRT_DRIVER_DIR="$b/src/.libs"
 export LIBVIRT_LOCK_MANAGER_PLUGIN_DIR="$b/src/.libs"
 export VIRTLOCKD_PATH="$b/src"