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-rw-r--r--cutl/details/boost/config/platform/irix.hpp4
1 files changed, 3 insertions, 1 deletions
diff --git a/cutl/details/boost/config/platform/irix.hpp b/cutl/details/boost/config/platform/irix.hpp
index b5ea887..d4add11 100644
--- a/cutl/details/boost/config/platform/irix.hpp
+++ b/cutl/details/boost/config/platform/irix.hpp
@@ -20,7 +20,9 @@
#ifdef __GNUC__
// GNU C on IRIX does not support threads (checked up to gcc 3.3)
-# define BOOST_DISABLE_THREADS
+# ifndef BOOST_DISABLE_THREADS
+# define BOOST_DISABLE_THREADS
+# endif
#endif
// boilerplate code: