--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -83,6 +83,10 @@
   set (DIR_ETC ${SYSCONF_INSTALL_DIR})
 endif (DEFINED SYSCONF_INSTALL_DIR)
 
+if (DEFINED CMAKE_INSTALL_LIBDIR)
+  set (DIR_LIBRARY ${CMAKE_INSTALL_LIBDIR})
+endif (DEFINED CMAKE_INSTALL_LIBDIR)
+
 set (DIR_SHARE_OPENCC ${DIR_SHARE}opencc/)
 set (DIR_SHARE_LOCALE ${DIR_SHARE}locale/)