Don't forget SODIUM_EXPORT in version.h.in

src/libsodium/include/sodium/version.h.in

@@ -2,6 +2,8 @@
 #ifndef __SODIUM_VERSION_H__
 #define __SODIUM_VERSION_H__
 
+#include "export.h"
+
 #define SODIUM_VERSION_STRING "@VERSION@"
 
 #define SODIUM_LIBRARY_VERSION_MAJOR @SODIUM_LIBRARY_VERSION_MAJOR@
@@ -11,8 +13,13 @@
 extern "C" {
 #endif
 
+SODIUM_EXPORT
 const char *sodium_version_string(void);
+
+SODIUM_EXPORT
 int         sodium_library_version_major(void);
+
+SODIUM_EXPORT
 int         sodium_library_version_minor(void);
 
 #ifdef __cplusplus