--- cryptlib.h.orig	2016-06-09 09:51:04.557194142 +0200
+++ cryptlib.h	2016-06-09 09:51:30.798062640 +0200
@@ -122,6 +122,7 @@
   #define C_CHR char
   #define C_STR C_CHR *
   #define C_RET	int
+  #define DL_EXPORT(type) type
 #endif /* Windows vs.everything else function types */
 
 /* Symbolic defines to make it clearer how the function parameters behave */