From 0a205155cf2eeee9ffc81ff931266a3e55322fdc Mon Sep 17 00:00:00 2001
From: ngoto <ngoto@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
Date: Sat, 21 Nov 2015 16:37:12 +0000
Subject: * configure.in: Add -D_XOPEN_SOURCE=500 (or 600 or 700) on Solaris  
 if available, mainly for enabling some features in sockets.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@52703 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
---
 ChangeLog    |  5 +++++
 configure.in | 49 +++++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 54 insertions(+)

diff --git a/ChangeLog b/ChangeLog
index 6f565f6904..3128441fcf 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+Sun Nov 22 01:23:43 2015  Naohisa Goto  <ngotogenome@gmail.com>
+
+	* configure.in: Add -D_XOPEN_SOURCE=500 (or 600 or 700) on Solaris
+	  if available, mainly for enabling some features in sockets.
+
 Sun Nov 22 00:17:22 2015  Naohisa Goto  <ngotogenome@gmail.com>
 
 	* test/socket/test_socket.rb (test/socket/test_socket.rb): skip
diff --git a/configure.in b/configure.in
index 6018a0a8bc..7c2a8c9ea1 100644
--- a/configure.in
+++ b/configure.in
@@ -1094,6 +1094,55 @@ main()
 		ac_cv_c_inline=no],
 [solaris*], [	LIBS="-lm $LIBS"
 		ac_cv_func_vfork=no
+		AC_MSG_CHECKING(whether _XOPEN_SOURCE is already given)
+		AC_TRY_COMPILE([#include <unistd.h>
+		    #ifndef _XOPEN_SOURCE
+		    #error _XOPEN_SOURCE is not defined
+		    #endif
+		    ], [],
+		    [given_xopen_source=yes], [given_xopen_source=no])
+		AC_MSG_RESULT($given_xopen_source)
+		if test $given_xopen_source = no; then
+		  AC_MSG_CHECKING(appropriate _XOPEN_SOURCE value to define)
+		  define_xopen_source=""
+		  if test x"$define_xopen_source" = x; then
+			AC_TRY_COMPILE([
+			#define _XOPEN_SOURCE 700
+			#include <unistd.h>
+			#ifndef _XPG7
+			#error _XPG7 should be defined by _XOPEN_SOURCE=700
+			#endif
+			], [],
+			[define_xopen_source=700], [])
+		  fi
+		  if test x"$define_xopen_source" = x; then
+			AC_TRY_COMPILE([
+			#define _XOPEN_SOURCE 600
+			#include <unistd.h>
+			#ifndef _XPG6
+			#error _XPG6 should be defined by _XOPEN_SOURCE=600
+			#endif
+			], [],
+			[define_xopen_source=600], [])
+		  fi
+		  if test x"$define_xopen_source" = x; then
+			AC_TRY_COMPILE([
+			#define _XOPEN_SOURCE 500
+			#include <unistd.h>
+			#ifndef _XPG5
+			#error _XPG5 should be defined by _XOPEN_SOURCE=500
+			#endif
+			], [],
+			[define_xopen_source=500], [])
+		  fi
+		  if test x"$define_xopen_source" = x; then
+		    define_xopen_source=no
+		  fi
+		  AC_MSG_RESULT($define_xopen_source)
+		  if test x"$define_xopen_source" != xno; then
+		    RUBY_APPEND_OPTIONS(CPPFLAGS, -D_XOPEN_SOURCE=$define_xopen_source)
+		  fi
+		fi
 		],
 [beos*|haiku*], [
 		ac_cv_func_link=no
-- 
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