Fix test failure on Cygwin.

[gnulib.git] / m4 / getline.m4

diff --git a/m4/getline.m4 b/m4/getline.m4
index 4217105..57625da 100644 (file)
--- a/m4/getline.m4
+++ b/m4/getline.m4
@@ -1,4 +1,4 @@
-# getline.m4 serial 16
+# getline.m4 serial 18
 
 dnl Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2005, 2006, 2007 Free
 dnl Software Foundation, Inc.
@@ -7,7 +7,7 @@ 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(2.52)
+AC_PREREQ([2.59])
 
 dnl See if there's a working, system-supplied version of the getline function.
 dnl We can't just do AC_REPLACE_FUNCS(getline) because some systems
@@ -18,9 +18,9 @@ AC_DEFUN([gl_FUNC_GETLINE],
   AC_REQUIRE([gl_STDIO_H_DEFAULTS])
 
   dnl Persuade glibc <stdio.h> to declare getline().
-  AC_REQUIRE([AC_GNU_SOURCE])
+  AC_REQUIRE([AC_USE_SYSTEM_EXTENSIONS])
 
-  AC_CHECK_DECLS([getline])
+  AC_CHECK_DECLS_ONCE([getline])
 
   gl_getline_needs_run_time_check=no
   AC_CHECK_FUNC(getline,
@@ -62,13 +62,13 @@ AC_DEFUN([gl_FUNC_GETLINE],
     )])
   fi
 
-  if test $ac_cv_func_getline = no; then
+  if test $ac_cv_have_decl_getline = no; then
     HAVE_DECL_GETLINE=0
   fi
 
   if test $am_cv_func_working_getline = no; then
     REPLACE_GETLINE=1
-    AC_LIBOBJ(getline)
+    AC_LIBOBJ([getline])
 
     gl_PREREQ_GETLINE
   fi