X-Git-Url: https://erislabs.net/gitweb/?a=blobdiff_plain;ds=sidebyside;f=m4%2Fwcpcpy.m4;h=1c0a128dca2b47a92d6561e8d460ea903e99f6a5;hb=831b84c59ef413c57a36b67344467d66a8a2ba70;hp=5ffe1a12e0b2b92cef74aaeae3796069f37135c8;hpb=83527ac1b14a16ad2254b81ced7457fbaa791550;p=gnulib.git

diff --git a/m4/wcpcpy.m4 b/m4/wcpcpy.m4
index 5ffe1a12e..1c0a128dc 100644
--- a/m4/wcpcpy.m4
+++ b/m4/wcpcpy.m4
@@ -1,5 +1,5 @@
-# wcpcpy.m4 serial 1
-dnl Copyright (C) 2011 Free Software Foundation, Inc.
+# wcpcpy.m4 serial 3
+dnl Copyright (C) 2011-2013 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.
@@ -7,9 +7,12 @@ dnl with or without modifications, as long as this notice is preserved.
 AC_DEFUN([gl_FUNC_WCPCPY],
 [
   AC_REQUIRE([gl_WCHAR_H_DEFAULTS])
+
+  dnl Persuade glibc <wchar.h> to declare wcpcpy().
+  AC_REQUIRE([AC_USE_SYSTEM_EXTENSIONS])
+
   AC_CHECK_FUNCS_ONCE([wcpcpy])
   if test $ac_cv_func_wcpcpy = no; then
     HAVE_WCPCPY=0
-    AC_LIBOBJ([wcpcpy])
   fi
 ])