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-rw-r--r--third_party/eigen3/Eigen/Array11
1 files changed, 11 insertions, 0 deletions
diff --git a/third_party/eigen3/Eigen/Array b/third_party/eigen3/Eigen/Array
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index 0000000000..3d004fb69e
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+++ b/third_party/eigen3/Eigen/Array
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+#ifndef EIGEN_ARRAY_MODULE_H
+#define EIGEN_ARRAY_MODULE_H
+
+// include Core first to handle Eigen2 support macros
+#include "Core"
+
+#ifndef EIGEN2_SUPPORT
+ #error The Eigen/Array header does no longer exist in Eigen3. All that functionality has moved to Eigen/Core.
+#endif
+
+#endif // EIGEN_ARRAY_MODULE_H