diff --git a/ChangeLog b/ChangeLog
index 4a906502fd..f1fe222842 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,11 @@
 1998-04-01  Ulrich Drepper  <drepper@cygnus.com>
 
+	* iconv/gconv_conf.c (builtin_aliases): New variable.
+	(__gconv_read_conf): Add builtin aliases.
+	* iconv/gconv_builtin.c (builtin_map): Define BUILTIN?ALIAS as an
+	noop macro before including gconv_builtin.h.
+	* iconv/gconv_builtin.h: Add alias names.
+
 	* iconv/gconv_simple.c (__gconv_transform_ucs4_utf8): Compute
 	number of converted bytes correctly.
 
diff --git a/iconv/gconv_builtin.c b/iconv/gconv_builtin.c
index 4193822e16..786a3c1e26 100644
--- a/iconv/gconv_builtin.c
+++ b/iconv/gconv_builtin.c
@@ -1,5 +1,5 @@
 /* Table for builtin transformation mapping.
-   Copyright (C) 1997 Free Software Foundation, Inc.
+   Copyright (C) 1997, 1998 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
 
@@ -41,6 +41,7 @@ static struct builtin_map
     init: Init,								      \
     end: End,								      \
   },
+#define BUILTIN_ALIAS(From, To)
 
 #include <gconv_builtin.h>
 };
diff --git a/iconv/gconv_builtin.h b/iconv/gconv_builtin.h
index 8dcc3aaaa2..3990b2cdb3 100644
--- a/iconv/gconv_builtin.h
+++ b/iconv/gconv_builtin.h
@@ -1,5 +1,5 @@
 /* Builtin transformations.
-   Copyright (C) 1997 Free Software Foundation, Inc.
+   Copyright (C) 1997, 1998 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
 
@@ -18,13 +18,16 @@
    write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
    Boston, MA 02111-1307, USA.  */
 
+BUILTIN_ALIAS ("UTF8//", "ISO-10646/UTF8/")
+BUILTIN_ALIAS ("UTF-8//", "ISO-10646/UTF8/")
+
 BUILTIN_TRANSFORMATION ("([^/]+)/UCS4/([^/]*)", NULL, 0,
 			"\\1/UTF8/\\2", 1, "=ucs4->utf8",
 			__gconv_transform_ucs4_utf8,
 			__gconv_transform_init_rstate,
 			__gconv_transform_end_rstate)
 
-BUILTIN_TRANSFORMATION ("([^/]+)/UTF8/([^/]*)", NULL, 0,
+BUILTIN_TRANSFORMATION ("([^/]+)/UTF-?8/([^/]*)", NULL, 0,
 			"\\1/UCS4/\\2", 1, "=utf8->ucs4",
 			__gconv_transform_utf8_ucs4,
 			__gconv_transform_init_rstate,
diff --git a/iconv/gconv_conf.c b/iconv/gconv_conf.c
index fb03372def..0c5ceef9e2 100644
--- a/iconv/gconv_conf.c
+++ b/iconv/gconv_conf.c
@@ -1,5 +1,5 @@
 /* Handle configuration data.
-   Copyright (C) 1997 Free Software Foundation, Inc.
+   Copyright (C) 1997, 1998 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
 
@@ -56,6 +56,20 @@ static struct gconv_module builtin_modules[] =
     cost: Cost,								      \
     module_name: Name							      \
   },
+#define BUILTIN_ALIAS(From, To)
+
+#include "gconv_builtin.h"
+};
+
+#undef BUILTIN_TRANSFORMATION
+#undef BUILTIN_ALIAS
+
+static const char *
+builtin_aliases[] =
+{
+#define BUILTIN_TRANSFORMATION(From, ConstPfx, ConstLen, To, Cost, Name, \
+			       Fct, Init, End)
+#define BUILTIN_ALIAS(From, To) From " " To,
 
 #include "gconv_builtin.h"
 };
@@ -362,6 +376,7 @@ __gconv_read_conf (void)
   void *modules = NULL;
   size_t nmodules = 0;
   int save_errno = errno;
+  size_t cnt;
 
   if (user_path == NULL)
     /* No user-defined path.  Make a modifiable copy of the default path.  */
@@ -428,6 +443,14 @@ __gconv_read_conf (void)
 	}
     }
 
+  /* Add aliases for builtin conversions.  */
+  cnt = sizeof (builtin_aliases) / sizeof (builtin_aliases[0]);
+  while (cnt > 0)
+    {
+      char *copy = strdupa (builtin_aliases[--cnt]);
+      add_alias (copy);
+    }
+
   /* Restore the error number.  */
   __set_errno (save_errno);
 }