--- libs\context\src\stack_allocator_posix.cpp	2012-05-22 21:02:04.000000000 +0100
+++ libs\context\src\stack_allocator_posix.cpp	2012-07-06 13:54:38.000000000 +0100
@@ -3,12 +3,16 @@
 // Distributed under the Boost Software License, Version 1.0.
 //    (See accompanying file LICENSE_1_0.txt or copy at
 //          http://www.boost.org/LICENSE_1_0.txt)

 #define BOOST_CONTEXT_SOURCE

+#if defined(sun) || defined(__sun)
+#define _XPG4_2
+#endif
+
 #include <boost/context/stack_allocator.hpp>

 extern "C" {
 #include <fcntl.h>
 #include <sys/mman.h>
 #include <sys/stat.h>
--- libs\context\src\stack_utils_posix.cpp	2012-04-12 19:42:36.000000000 +0100
+++ libs\context\src\stack_utils_posix.cpp	2012-07-06 13:59:54.000000000 +0100
@@ -8,17 +8,17 @@

 #include <boost/context/stack_utils.hpp>

 extern "C" {
 #include <sys/resource.h>
 #include <sys/time.h>
+#include <signal.h>
 #include <unistd.h>
 }

 #include <cmath>
-#include <csignal>

 #include <boost/assert.hpp>

 namespace {

 static rlimit stacksize_limit_()