From 2b3fdd4a58246f083dd6bf0d3dc2aa7c5ab24ea0 Mon Sep 17 00:00:00 2001
From: paboyle <paboyle@ph.ed.ac.uk>
Date: Thu, 11 May 2017 12:05:50 +0100
Subject: [PATCH] Print CXX predefines

---
 configure.ac | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/configure.ac b/configure.ac
index d75c0180..03dfa019 100644
--- a/configure.ac
+++ b/configure.ac
@@ -29,6 +29,7 @@ AC_DEFINE_UNQUOTED([GXX_VERSION],["$GXX_VERSION"],
 
 CXXFLAGS="-O3 $CXXFLAGS"
 
+
 ############### Checks for typedefs, structures, and compiler characteristics
 AC_TYPE_SIZE_T
 AC_TYPE_UINT32_T
@@ -190,6 +191,7 @@ AC_SEARCH_LIBS([H5Fopen], [hdf5_cpp],
                [LIBS="${LIBS} -lhdf5"], [], [-lhdf5])
 AM_CONDITIONAL(BUILD_HDF5, [ test "${have_hdf5}X" == "trueX" ])
 
+$CXX -dM -E -x c /dev/null
 CXXFLAGS=$CXXFLAGS_CPY
 LDFLAGS=$LDFLAGS_CPY