--- a/lib/getline.h
+++ b/lib/getline.h
@@ -27,6 +27,7 @@
 #  endif
 # endif
 
+# if defined (__GLIBC__)
 # if __GLIBC__ < 2
 int
 getline PARAMS ((char **_lineptr, size_t *_n, FILE *_stream));
@@ -34,5 +35,6 @@
 int
 getdelim PARAMS ((char **_lineptr, size_t *_n, int _delimiter, FILE *_stream));
 # endif
+# endif
 
 #endif /* not GETLINE_H_ */