From ac69fb37ef235e2e39cc2a9b92a69ea700286f9c Mon Sep 17 00:00:00 2001
From: Matthieu Schaller <matthieu.schaller@durham.ac.uk>
Date: Sat, 7 Oct 2017 15:15:19 +0100
Subject: [PATCH] Check at configure time whether POSIX barriers are available.

---
 configure.ac | 1 +
 1 file changed, 1 insertion(+)

diff --git a/configure.ac b/configure.ac
index 5851324ec7..7506459d85 100644
--- a/configure.ac
+++ b/configure.ac
@@ -379,6 +379,7 @@ AX_PTHREAD([LIBS="$PTHREAD_LIBS $LIBS" CFLAGS="$CFLAGS $PTHREAD_CFLAGS"
     or use CPPFLAGS and LDFLAGS if the library is installed in a
     non-standard location.]))
 
+AC_CHECK_LIB(pthread, pthread_barrier_init,,AC_MSG_ERROR(POSIX implementation does not have barriers!))
 
 # Check for metis. Note AX_LIB_METIS exists, but cannot be configured
 # to be default off (i.e. given no option it tries to locate METIS), so we
-- 
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