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-rw-r--r--Eigen/Core8
1 files changed, 6 insertions, 2 deletions
diff --git a/Eigen/Core b/Eigen/Core
index a4596e73b..0c09f7c79 100644
--- a/Eigen/Core
+++ b/Eigen/Core
@@ -72,7 +72,9 @@
#include <cmath>
#include <cassert>
#include <functional>
-#include <iosfwd>
+#ifndef EIGEN_NO_IO
+ #include <iosfwd>
+#endif
#include <cstring>
#include <string>
#include <limits>
@@ -224,7 +226,9 @@ using std::ptrdiff_t;
#include "src/Core/util/IndexedViewHelper.h"
#include "src/Core/util/ReshapedHelper.h"
#include "src/Core/ArithmeticSequence.h"
-#include "src/Core/IO.h"
+#ifndef EIGEN_NO_IO
+ #include "src/Core/IO.h"
+#endif
#include "src/Core/DenseCoeffsBase.h"
#include "src/Core/DenseBase.h"
#include "src/Core/MatrixBase.h"