--- embedaddon/libiconv/srcm4/errno_h.m4	2012/05/29 09:29:44	1.1.1.2
+++ embedaddon/libiconv/srcm4/errno_h.m4	2021/03/17 13:38:46	1.1.1.3
@@ -1,15 +1,20 @@
-# errno_h.m4 serial 10
-dnl Copyright (C) 2004, 2006, 2008-2011 Free Software Foundation, Inc.
+# errno_h.m4 serial 13
+dnl Copyright (C) 2004, 2006, 2008-2019 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
 
+AC_PREREQ([2.61])
+
 AC_DEFUN_ONCE([gl_HEADER_ERRNO_H],
 [
   AC_REQUIRE([AC_PROG_CC])
   AC_CACHE_CHECK([for complete errno.h], [gl_cv_header_errno_h_complete], [
     AC_EGREP_CPP([booboo],[
 #include <errno.h>
+#if !defined ETXTBSY
+booboo
+#endif
 #if !defined ENOMSG
 booboo
 #endif
@@ -49,6 +54,15 @@ booboo
 #if !defined ECANCELED
 booboo
 #endif
+#if !defined EOWNERDEAD
+booboo
+#endif
+#if !defined ENOTRECOVERABLE
+booboo
+#endif
+#if !defined EILSEQ
+booboo
+#endif
       ],
       [gl_cv_header_errno_h_complete=no],
       [gl_cv_header_errno_h_complete=yes])
@@ -116,10 +130,4 @@ yes
     AC_SUBST($1[_HIDDEN])
     AC_SUBST($1[_VALUE])
   fi
-])
-
-dnl Autoconf >= 2.61 has AC_COMPUTE_INT built-in.
-dnl Remove this when we can assume autoconf >= 2.61.
-m4_ifdef([AC_COMPUTE_INT], [], [
-  AC_DEFUN([AC_COMPUTE_INT], [_AC_COMPUTE_INT([$2],[$1],[$3],[$4])])
 ])