build: Experimental support to build using precompiled headers

This type of build needs to be explicitly enabled using --with-pch
configure option.

Change-Id: I02dc304187d54c3cf40f1d51b1b11b21f868e225
diff --git a/src/name-component.cpp b/src/name-component.cpp
index 3956e80..0fd7bd7 100644
--- a/src/name-component.cpp
+++ b/src/name-component.cpp
@@ -7,6 +7,8 @@
  * See COPYING for copyright and distribution information.
  */
 
+#include "common.hpp"
+
 #include "name-component.hpp"
 
 #include "util/time.hpp"