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diff --git a/ltdl/libltdl/slist.h b/ltdl/libltdl/slist.h
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+++ b/ltdl/libltdl/slist.h
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+/* slist.h -- generalised singly linked lists
+
+   Copyright (C) 2000, 2004 Free Software Foundation, Inc.
+   Written by Gary V. Vaughan, 2000
+
+   NOTE: The canonical source of this file is maintained with the
+   GNU Libtool package.  Report bugs to bug-libtool@gnu.org.
+
+GNU Libltdl is free software; you can redistribute it and/or
+modify it under the terms of the GNU Lesser General Public
+License as published by the Free Software Foundation; either
+version 2 of the License, or (at your option) any later version.
+
+As a special exception to the GNU Lesser General Public License,
+if you distribute this file as part of a program or library that
+is built using GNU Libtool, you may include this file under the
+same distribution terms that you use for the rest of that program.
+
+GNU Libltdl is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU Lesser General Public License for more details.
+
+You should have received a copy of the GNU Lesser General Public
+License along with GNU Libltdl; see the file COPYING.LIB.  If not, a
+copy can be downloaded from  http://www.gnu.org/licenses/lgpl.html,
+or obtained by writing to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+*/
+
+/* A generalised list.  This is deliberately transparent so that you
+   can make the NEXT field of all your chained data structures first,
+   and then cast them to `(SList *)' so that they can be manipulated
+   by this API.
+
+   Alternatively, you can generate raw SList elements using slist_new(),
+   and put the element data in the USERDATA field.  Either way you
+   get to manage the memory involved by yourself.
+*/
+
+#if !defined(SLIST_H)
+#define SLIST_H 1
+
+#if defined(LTDL)
+#  include <libltdl/lt__glibc.h>
+#  include <libltdl/lt_system.h>
+#else
+#  define LT_SCOPE
+#endif
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+typedef struct slist {
+  struct slist *next;		/* chain forward pointer*/
+  const void *userdata;		/* for boxed `SList' item */
+} SList;
+
+typedef void *	SListCallback	(SList *item, void *userdata);
+typedef int	SListCompare	(const SList *item1, const SList *item2,
+				 void *userdata);
+
+LT_SCOPE SList *slist_concat	(SList *head, SList *tail);
+LT_SCOPE SList *slist_cons	(SList *item, SList *slist);
+
+LT_SCOPE SList *slist_delete	(SList *slist, void (*delete_fct) (void *item));
+LT_SCOPE void *	slist_remove	(SList **phead, SListCallback *find,
+				 void *matchdata);
+LT_SCOPE SList *slist_reverse	(SList *slist);
+LT_SCOPE SList *slist_sort	(SList *slist, SListCompare *compare,
+				 void *userdata);
+
+LT_SCOPE SList *slist_tail	(SList *slist);
+LT_SCOPE SList *slist_nth	(SList *slist, size_t n);
+LT_SCOPE void *	slist_find	(SList *slist, SListCallback *find,
+				 void *matchdata);
+LT_SCOPE size_t slist_length	(SList *slist);
+
+LT_SCOPE void *	slist_foreach   (SList *slist, SListCallback *foreach,
+				 void *userdata);
+
+LT_SCOPE SList *slist_box	(const void *userdata);
+LT_SCOPE void *	slist_unbox	(SList *item);
+
+#if defined(__cplusplus)
+}
+#endif
+
+#if !defined(LTDL)
+#  undef LT_SCOPE
+#endif
+
+#endif /*!defined(SLIST_H)*/