From 9e3eb502122cbc6433a50fc5b874ac759e0c5208 Mon Sep 17 00:00:00 2001
From: nobu <nobu@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
Date: Mon, 7 Oct 2013 13:19:02 +0000
Subject: [PATCH] configure.in: add mingw FIBER_USE_NATIVE

* configure.in (FIBER_USE_NATIVE): add mingw condition.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@43180 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
---
 configure.in | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/configure.in b/configure.in
index 03d08386a1..04bdbb926c 100644
--- a/configure.in
+++ b/configure.in
@@ -2352,6 +2352,7 @@ if test x"$enable_pthread" = xyes; then
       AC_CHECK_FUNCS(pthread_attr_init)
     fi
 fi
+FIBER_USE_NATIVE=0
 if test x"$ac_cv_header_ucontext_h" = xyes; then
     if test x"$rb_with_pthread" = xyes; then
 	AC_CHECK_FUNCS(getcontext setcontext)
@@ -2360,10 +2361,14 @@ if test x"$ac_cv_header_ucontext_h" = xyes; then
 		[*-netbsd*], [],
 		[ia64-*], [], # r38766
 		[*-sunos*|*-solaris*], [], # r32408
-		[AC_DEFINE(FIBER_USE_NATIVE, 1)])
+		[FIBER_USE_NATIVE=1])
 	fi
     fi
+else
+    AS_CASE("$target_os", [mingw*|mswin*],
+	    [test "[$[with_winnt_ver]]" -ge [$[0x0400]] && FIBER_USE_NATIVE=1])
 fi
+AC_DEFINE(FIBER_USE_NATIVE)
 
 if test "$ac_cv_func_fork" = "yes" -a "$rb_with_pthread" = "yes"; then
     AC_CACHE_CHECK([if fork works with pthread], rb_cv_fork_with_pthread,