--- lcms2.h	Wed Jul 20 08:46:01 2016
+++ lcms2.h	Mon Jan 30 15:01:12 2017
@@ -212,6 +212,7 @@
 
 #endif  // CMS_USE_BIG_ENDIAN
 
+#define CMS_DLL_BUILD
 
 // Calling convention -- this is hardly platform and compiler dependent
 #ifdef CMS_IS_WINDOWS_