X-Git-Url: http://erislabs.net/gitweb/?a=blobdiff_plain;f=m4%2Finet_ntop.m4;h=0167dd2b484ba81b7f3dadaf4e4fd67c534e7356;hb=7f68b5ace68d29f3627ce2e3a1e8966aea5ec778;hp=5eec8692e7bc924d017f053fd8723c63e1f9b707;hpb=3a5937ce8700a0fc6e813601c5a0f2acf5367fa9;p=gnulib.git

diff --git a/m4/inet_ntop.m4 b/m4/inet_ntop.m4
index 5eec8692e..0167dd2b4 100644
--- a/m4/inet_ntop.m4
+++ b/m4/inet_ntop.m4
@@ -1,18 +1,42 @@
-# inet_ntop.m4 serial 2
-dnl Copyright (C) 2005, 2006 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.
 
-AC_DEFUN([gl_INET_NTOP],
+AC_DEFUN([gl_FUNC_INET_NTOP],
 [
-  AC_REPLACE_FUNCS(inet_ntop)
+  dnl Persuade Solaris <arpa/inet.h> to declare inet_ntop.
+  AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS])
+
+  dnl Most platforms that provide inet_ntop define it in libc.
+  dnl Solaris 8..10 provide inet_ntop in libnsl instead.
+  gl_save_LIBS=$LIBS
+  AC_SEARCH_LIBS([inet_ntop], [nsl], [],
+    [AC_REPLACE_FUNCS([inet_ntop])])
+  LIBS=$gl_save_LIBS
+  INET_NTOP_LIB=
+  if test "$ac_cv_search_inet_ntop" != "no" &&
+     test "$ac_cv_search_inet_ntop" != "none required"; then
+    INET_NTOP_LIB="$ac_cv_search_inet_ntop"
+  fi
+  AC_SUBST([INET_NTOP_LIB])
+
   gl_PREREQ_INET_NTOP
 ])
 
-# Prerequisites of lib/inet_ntop.h and lib/inet_ntop.c.
+# Prerequisites of lib/inet_ntop.c.
 AC_DEFUN([gl_PREREQ_INET_NTOP], [
-  AC_CHECK_HEADERS_ONCE([netinet/in.h arpa/inet.h])
-  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
   AC_REQUIRE([gl_SOCKET_FAMILIES])
+  AC_REQUIRE([AC_C_RESTRICT])
 ])