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-rw-r--r--boost/interprocess/sync/posix/semaphore.hpp6
1 files changed, 5 insertions, 1 deletions
diff --git a/boost/interprocess/sync/posix/semaphore.hpp b/boost/interprocess/sync/posix/semaphore.hpp
index ba6a6f0eba..6fea766eda 100644
--- a/boost/interprocess/sync/posix/semaphore.hpp
+++ b/boost/interprocess/sync/posix/semaphore.hpp
@@ -11,7 +11,11 @@
#ifndef BOOST_INTERPROCESS_POSIX_SEMAPHORE_HPP
#define BOOST_INTERPROCESS_POSIX_SEMAPHORE_HPP
-#if defined(_MSC_VER)
+#ifndef BOOST_CONFIG_HPP
+# include <boost/config.hpp>
+#endif
+#
+#if defined(BOOST_HAS_PRAGMA_ONCE)
# pragma once
#endif