gnulib-tool: fix portability problem with MacOS sed

[gnulib.git] / m4 / inet_ntop.m4

diff --git a/m4/inet_ntop.m4 b/m4/inet_ntop.m4
index a6d219c..0167dd2 100644 (file)
--- a/m4/inet_ntop.m4
+++ b/m4/inet_ntop.m4
@@ -1,5 +1,5 @@
-# inet_ntop.m4 serial 12
-dnl Copyright (C) 2005, 2006, 2008, 2009, 2010 Free Software Foundation, Inc.
+# inet_ntop.m4 serial 14
+dnl Copyright (C) 2005-2006, 2008-2011 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.
@@ -9,8 +9,6 @@ AC_DEFUN([gl_FUNC_INET_NTOP],
   dnl Persuade Solaris <arpa/inet.h> to declare inet_ntop.
   AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS])
 
-  gl_REPLACE_ARPA_INET_H
-
   dnl Most platforms that provide inet_ntop define it in libc.
   dnl Solaris 8..10 provide inet_ntop in libnsl instead.
   gl_save_LIBS=$LIBS
@@ -29,7 +27,13 @@ AC_DEFUN([gl_FUNC_INET_NTOP],
 
 # Prerequisites of lib/inet_ntop.c.
 AC_DEFUN([gl_PREREQ_INET_NTOP], [
-  AC_CHECK_DECLS([inet_ntop],,,[#include <arpa/inet.h>])
+  AC_CHECK_HEADERS_ONCE([netdb.h])
+  AC_CHECK_DECLS([inet_ntop],,,
+    [#include <arpa/inet.h>
+     #if HAVE_NETDB_H
+     # include <netdb.h>
+     #endif
+    ])
   if test $ac_cv_have_decl_inet_ntop = no; then
     HAVE_DECL_INET_NTOP=0
   fi