uname: Rewrite printing of Windows NT versions

[gnulib.git] / m4 / inet_ntop.m4

diff --git a/m4/inet_ntop.m4 b/m4/inet_ntop.m4
index fea429e..2bbdca1 100644 (file)
--- a/m4/inet_ntop.m4
+++ b/m4/inet_ntop.m4
@@ -1,16 +1,37 @@
-# inet_ntop.m4 serial 1
-dnl Copyright (C) 2005 Free Software Foundation, Inc.
+# inet_ntop.m4 serial 9
+dnl Copyright (C) 2005, 2006, 2008, 2009 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_REPLACE_FUNCS(inet_ntop)
+  dnl Persuade Solaris <arpa/inet.h> to declare inet_ntop.
+  AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS])
+
+  gl_REPLACE_ARPA_INET_H
+
+  dnl The AC_SEARCH_LIBS call is a hack to persuade the Solaris 8 linker to
+  dnl find inet_ntop.
+  dnl
+  dnl It is the responsibility of gl_INET_NTOP's caller to arrange for
+  dnl -lnsl if it is needed.  Normally -lnsl is not needed on Solaris 8,
+  dnl since inet_ntop is needed only by getaddrinfo, and getaddrinfo
+  dnl isn't built on Solaris 8.
+  gl_save_LIBS=$LIBS
+  AC_SEARCH_LIBS([inet_ntop], [nsl], [],
+    [AC_REPLACE_FUNCS([inet_ntop])])
+  LIBS=$gl_save_LIBS
+
   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_DECLS([inet_ntop],,,[#include <arpa/inet.h>])
+  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])
 ])