--- hatari/src/includes/str.h	2019/04/01 07:14:48	1.1
+++ hatari/src/includes/str.h	2019/04/09 08:48:41	1.1.1.3
@@ -14,10 +14,10 @@
 # include <strings.h>
 #endif
 
-char *Str_Trim(char *buffer);
-char *Str_ToUpper(char *pString);
-char *Str_ToLower(char *pString);
-char *Str_Trunc(char *str);
-bool Str_IsHex(const char *str);
+extern char *Str_Trim(char *buffer);
+extern char *Str_ToUpper(char *pString);
+extern char *Str_ToLower(char *pString);
+extern char *Str_Trunc(char *str);
+extern bool Str_IsHex(const char *str);
 
 #endif  /* HATARI_STR_H */