From 5b18f05656ef1daab87f0e79db0eb7c4db7f48b6 Mon Sep 17 00:00:00 2001
From: Tomas Jurov <tomasgithubjurov@gmail.com>
Date: Sat, 17 May 2025 21:55:23 +0200
Subject: [PATCH] =?UTF-8?q?=C2=96In=20a=20similar=20way,=20add=20Multi=20R?=
 =?UTF-8?q?obotKeyFormatter=20as=20an=20external=20variable?=
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---
 gtsam/inference/Key.cpp | 1 +
 gtsam/inference/Key.h   | 3 +--
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/gtsam/inference/Key.cpp b/gtsam/inference/Key.cpp
index 15d633eeb..073a545c3 100644
--- a/gtsam/inference/Key.cpp
+++ b/gtsam/inference/Key.cpp
@@ -28,6 +28,7 @@ namespace gtsam {
 
 /// Assign default key formatter
 KeyFormatter DefaultKeyFormatter = &_defaultKeyFormatter;
+KeyFormatter MultiRobotKeyFormatter = &_multirobotKeyFormatter;
 
 /* ************************************************************************* */
 string _defaultKeyFormatter(Key key) {
diff --git a/gtsam/inference/Key.h b/gtsam/inference/Key.h
index a02d018f5..59f5ecf50 100644
--- a/gtsam/inference/Key.h
+++ b/gtsam/inference/Key.h
@@ -57,8 +57,7 @@ GTSAM_EXPORT std::string _multirobotKeyFormatter(gtsam::Key key);
 /// formatter in print functions.
 ///
 /// Checks for LabeledSymbol, Symbol and then plain keys, in order.
-static const gtsam::KeyFormatter MultiRobotKeyFormatter =
-    &_multirobotKeyFormatter;
+extern GTSAM_EXPORT KeyFormatter MultiRobotKeyFormatter; 
 
 /// To use the key_formatter on Keys, they must be wrapped in a StreamedKey.
 struct StreamedKey {