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-rw-r--r--argp/argp-help.c6
1 files changed, 5 insertions, 1 deletions
diff --git a/argp/argp-help.c b/argp/argp-help.c
index a3a1a12ef9..d78060d12c 100644
--- a/argp/argp-help.c
+++ b/argp/argp-help.c
@@ -1,5 +1,5 @@
 /* Hierarchial argument parsing help output
-   Copyright (C) 1995, 1996, 1997, 1998 Free Software Foundation, Inc.
+   Copyright (C) 1995, 1996, 1997, 1998, 1999 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Written by Miles Bader <miles@gnu.ai.mit.edu>.
 
@@ -759,7 +759,11 @@ hol_entry_cmp (const struct hol_entry *entry1,
 	{
 	  char first1 = short1 ? short1 : long1 ? *long1 : 0;
 	  char first2 = short2 ? short2 : long2 ? *long2 : 0;
+#ifdef _tolower
+	  int lower_cmp = _tolower (first1) - _tolower (first2);
+#else
 	  int lower_cmp = tolower (first1) - tolower (first2);
+#endif
 	  /* Compare ignoring case, except when the options are both the
 	     same letter, in which case lower-case always comes first.  */
 	  return lower_cmp ? lower_cmp : first2 - first1;