--- ./src/scim_hangul_imengine.cpp.orig	2012-05-11 22:51:39.653751057 -0500
+++ ./src/scim_hangul_imengine.cpp	2012-05-11 22:53:45.793739278 -0500
@@ -33,6 +33,8 @@
   #include <config.h>
 #endif
 
+#include <unistd.h>
+
 #include <scim.h>
 #include "scim_hangul_imengine.h"