-extern cups_lang_t *cupsLangDefault(void);
-extern const char *cupsLangEncoding(cups_lang_t *lang);
-extern void cupsLangFlush(void);
-extern void cupsLangFree(cups_lang_t *lang);
-extern cups_lang_t *cupsLangGet(const char *language);
+extern cups_lang_t *cupsLangDefault(void) _CUPS_PUBLIC;
+extern const char *cupsLangEncoding(cups_lang_t *lang) _CUPS_PUBLIC;
+extern void cupsLangFlush(void) _CUPS_PUBLIC;
+extern void cupsLangFree(cups_lang_t *lang) _CUPS_PUBLIC;
+extern cups_lang_t *cupsLangGet(const char *language) _CUPS_PUBLIC;