From b7220edcf431a87c9e78d34968e904d58a6dad9d Mon Sep 17 00:00:00 2001
From: yugui <yugui@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
Date: Thu, 15 Jan 2009 15:38:42 +0000
Subject: merges r21505 from trunk into ruby_1_9_1. * ext/socket/extconf.rb
 (gai_strerror): checks if available and if   returns const pointer.

* ext/socket/getaddrinfo.c (gai_strerror): defines only if non
  available.  [ruby-core:21328]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_1_9_1@21558 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
---
 ext/socket/extconf.rb    | 13 +++++++++++++
 ext/socket/getaddrinfo.c |  7 +++++--
 2 files changed, 18 insertions(+), 2 deletions(-)

(limited to 'ext')

diff --git a/ext/socket/extconf.rb b/ext/socket/extconf.rb
index 06011d61a8..99deaf8793 100644
--- a/ext/socket/extconf.rb
+++ b/ext/socket/extconf.rb
@@ -254,6 +254,19 @@ unless getaddr_info_ok and have_func("getnameinfo", headers) and have_func("geta
   have_func("inet_ntop") or have_func("inet_ntoa")
   have_func("inet_pton") or have_func("inet_aton")
   have_func("getservbyport")
+  if have_func("gai_strerror")
+    unless checking_for("gai_strerror() returns const pointer") {!try_compile(<<EOF)}
+#{cpp_include(headers)}
+#include <stdlib.h>
+void
+conftest_gai_strerror_is_const()
+{
+    *gai_strerror(0) = 0;
+}
+EOF
+      $defs << "-DGAI_STRERROR_CONST"
+    end
+  end
   have_header("arpa/nameser.h")
   have_header("resolv.h")
 end
diff --git a/ext/socket/getaddrinfo.c b/ext/socket/getaddrinfo.c
index de16b9fb12..5ce935f582 100644
--- a/ext/socket/getaddrinfo.c
+++ b/ext/socket/getaddrinfo.c
@@ -39,6 +39,9 @@
  */
 
 #include "ruby/config.h"
+#ifdef RUBY_EXTCONF_H
+#include RUBY_EXTCONF_H
+#endif
 #include <sys/types.h>
 #ifndef _WIN32
 #include <sys/param.h>
@@ -195,8 +198,8 @@ if (pai->ai_flags & AI_CANONNAME) {\
 
 #define ERR(err) { error = (err); goto bad; }
 
-#ifndef __HAIKU__
-#if defined __UCLIBC__
+#ifndef HAVE_GAI_STRERROR
+#ifdef GAI_STRERROR_CONST
 const
 #endif
 char *
-- 
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