1 files changed, 6 insertions, 2 deletions

diff --git a/gl/m4/error.m4 b/gl/m4/error.m4
index 29e6fdc..8e3cf95 100644
--- a/gl/m4/error.m4
+++ b/gl/m4/error.m4
@@ -1,6 +1,6 @@
-#serial 14
+#serial 15
 
-# Copyright (C) 1996-1998, 2001-2004, 2009-2013 Free Software Foundation, Inc.
+# Copyright (C) 1996-1998, 2001-2004, 2009-2021 Free Software Foundation, Inc.
 #
 # This file is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
@@ -22,6 +22,10 @@ AC_DEFUN([gl_ERROR],
 # Prerequisites of lib/error.c.
 AC_DEFUN([gl_PREREQ_ERROR],
 [
+  dnl Use system extensions on Android, so that AC_FUNC_STRERROR_R
+  dnl discovers the GNU API for strerror_r on Android API level 23 and later.
+  AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS])
+
   AC_REQUIRE([AC_FUNC_STRERROR_R])
   :
 ])