From 49f4c911f6daa00daa341daddda497a3323e3263 Mon Sep 17 00:00:00 2001
From: Alex Cunningham <alexgcunningham@gmail.com>
Date: Sat, 15 Oct 2011 18:38:45 +0000
Subject: [PATCH] changed the concept check macro to use a typedef instead of a
 instantiation

---
 gtsam/geometry/concepts.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/gtsam/geometry/concepts.h b/gtsam/geometry/concepts.h
index 084cd4ffd..86e7510e1 100644
--- a/gtsam/geometry/concepts.h
+++ b/gtsam/geometry/concepts.h
@@ -57,6 +57,6 @@ struct RangeMeasurementConcept {
 };
 
 /** Instantiation macro */
-#define GTSAM_CONCEPT_RANGE_MEASUREMENT(V1,V2) template class RangeMeasurementConcept<V1,V2>;
+#define GTSAM_CONCEPT_RANGE_MEASUREMENT(V1,V2) typedef RangeMeasurementConcept<V1,V2> RangeMeasurementConcept##V1##V2;
 
 } // \namespace gtsam