From b687317ccbf2ff007d3c1c7831e0ac4e53fe5a90 Mon Sep 17 00:00:00 2001
From: Mike Sheffler <msheffler@toyon.com>
Date: Sun, 13 Feb 2022 16:47:12 -0800
Subject: [PATCH] EXPORT statements to help Windows build. In Constraint.h,
 there was a GTSAM_EXPORT that should have been GTSAM_UNSTABLE_EXPORT, and in
 DiscreteKey.h, there should be a GTSAM_EXPORT in front of an operator
 definition for a class that is being exported.

---
 gtsam/discrete/DiscreteKey.h         | 2 +-
 gtsam_unstable/discrete/Constraint.h | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/gtsam/discrete/DiscreteKey.h b/gtsam/discrete/DiscreteKey.h
index ce0c56dbe..dea00074d 100644
--- a/gtsam/discrete/DiscreteKey.h
+++ b/gtsam/discrete/DiscreteKey.h
@@ -72,5 +72,5 @@ namespace gtsam {
   }; // DiscreteKeys
 
   /// Create a list from two keys
-  DiscreteKeys operator&(const DiscreteKey& key1, const DiscreteKey& key2);
+  GTSAM_EXPORT DiscreteKeys operator&(const DiscreteKey& key1, const DiscreteKey& key2);
 }
diff --git a/gtsam_unstable/discrete/Constraint.h b/gtsam_unstable/discrete/Constraint.h
index 4ee7b85eb..168891e6f 100644
--- a/gtsam_unstable/discrete/Constraint.h
+++ b/gtsam_unstable/discrete/Constraint.h
@@ -34,7 +34,7 @@ using Domains = std::map<Key, Domain>;
  * Base class for constraint factors
  * Derived classes include SingleValue, BinaryAllDiff, and AllDiff.
  */
-class GTSAM_EXPORT Constraint : public DiscreteFactor {
+class GTSAM_UNSTABLE_EXPORT Constraint : public DiscreteFactor {
  public:
   typedef boost::shared_ptr<Constraint> shared_ptr;